4000 Essential English Words 4 – Answer Key
1
Unit 1
Exercise 1
1. rapid / rate
2. contemporary / vary
3. humid / toxic
4. texture / aroma
5. cluster / combined
6. subtle / soothing
7. cultivated / odor
8. palate / beverage
9. condensed / divine
10. paradise / plantations
Exercise 2
Part A
1. i
2. e
3. c
4. g
5. b
6. a
7. f
8. h
9. d
10. j
Part B
1. g
2.i
3. h
4. a
5. j
6. e
7.f
8.c
9. d
10. b
Reading Comprehension
Part A
1. T
2. T
3. F The Aztecs cultivated chocolate trees on plantations.
4. T
5. F The first chocolate beverages were made by the Mayans and Aztecs.
6. T
Part B
1. a
2. c
3. d
4. c
4000 Essential English Words 4 – Answer Key
2
Unit 2
Exercise 1
Part A
1. a
2. d
3. d
4. b
5. b
Part B
1. c
2. b
3. a
4. b
5. d
Exercise 2
1. admiral
2. sour
3. Kerosene
4. conscience
5. grapefruits
6. steward
7. fiery
8. string
9. hay
10.hoop
Exercise 3
1. stake
2. flesh
3. wreck
4. accident
5. character
Reading Comprehension
Part A
1. T
2. T
3. F The admiral put branches with sharp thorns in the monkey’s cages.
4. F The steward had a good conscience.
5. F The steward was horrified because the monkeys were thin and weak.
6. T
Part B
1. b
2. b
3. c
4. b
4000 Essential English Words 4 – Answer Key
3
Unit 3
Exercise 1
1. option / idiot
2. torment / admonished
3. pinpoint / echoed
4. brag / perfect
5. switch / beware
6. eventual / pastime
7. awesome / disagreed
8. audible /conscious
9. immense / indirect
10. hint / thorough
Exercise 2
Part A
1. b
2. j
3. f
4. a
5. i
6. e
7. d
8. g
9. h
10. c
Part B
1. e
2. j
3. h
4. i
5. a
6. c
7. d
8. g
9. b
10. f
Reading Comprehension
Part A
1. T
2. T
3. T
4. F When the young man had an option of two trails, he always chose the more difficult of the two.
5. T
6. F When the young man arrived home, he knew that he had acted like an idiot.
Part B
1. d
2. b
3. a
4. a
4000 Essential English Words 4 – Answer Key
4
Unit 4
Exercise 1
Part A
1. a
2. c
3. b
4. a
5. c
6. b
7. a
8. a
9. d
10. b
Exercise 2
1. perish / oblivious
2. roost / fond
3. rim / pit
4. soars / flight
5. moan / weep
6. typical / immoral
7. except / beak
8. trivial / disapprove
9. utterly / ivy
10. slippery / damp
Reading Comprehension
Part A
1. T
2. F Eagle had a roost near the pit.
3. T
4. T
5. F Fox was oblivious to the hidden animals.
6. T
Part B
1. b
2. c
3. d
4. d
4000 Essential English Words 4 – Answer Key
5
Unit 5
Exercise 1
1. operate / cyberspace
2. recent / global
3. ignorant / weird
4. essays / edit
5. semester / index
6. fainted / lecture
7. typewritten / highlighted
8. resolution / gymnasium
9. moral / awhile
10. evaluated / private
Exercise 2
Part A
1. g
2. e
3. a
4. i
5. c
6. b
7. j
8. h
9. f
10. d
Part B
1. e
2. g
3. c
4. j
5. i
6. b
7. f
8. h
9. d
10. a
Reading Comprehension
Part A
1. T
2. F The private study rooms were downstairs.
3. F The computers in the private study rooms were operating correctly.
4. T
5. F The geography test was worth seventy percent of the final grade.
6. T
Part B
1. c
2. a
3. b
4. b
4000 Essential English Words 4 – Answer Key
6
Unit 6
Exercise 1
Part A
1. b
2. a
3. c
4. b
5. a
Part B
1. b
2. a
3. a
4. d
5. c
Exercise 2
Part A
1. g
2. c
3. b
4. j
5. f
6. i
7. d
8. a
9. e
10. h
Part B
1. e
2. c
3. j
4. b
5. f
6. d
7. h
8. a
9. i
10. g
Reading Comprehension
Part A
1. F Jack Frost likes playing tricks on folks.
2. T
3. F Jack Frost’s role is to decorate everything with frost and ice.
4. T
5. T
6. F When Jack Frost set fire to the food, the butter started to melt.
Part B
1. a
2. d
3. b
4. c
4000 Essential English Words 4 – Answer Key
7
Unit 7
Exercise 1
Part A
1. b
2. a
3. c
4. b
5. d
Part B
1. c
2. d
3. b
4. a
5. c
Exercise 2
1. a
2. c
3. b
4. d
5. d
Exercise 3
1. resources
2. rally
3. memorable
4. offense
5. account
6. obliged
7. proclaimed
8. volunteered
9. habitat
10. gratitude
Reading Comprehension
Part A
1. F The architect wanted to build a new office building.
2. T
3. T
4. T
5. F The people could not conceal their gratitude, so they cheered.
6. T
Part B
1. b
2. c
3. a
4. d
4000 Essential English Words 4 – Answer Key
8
Unit 8
Exercise 1
1. replace / conduct
2. influenced / laws
3. gripped / snapped
4. enclosed / whatsoever
5. impending / constantly
6. cracks / tends
7. device / mode
8. halted / access
9.valid / version
10. perspired / sly
Exercise 2
Part A
1. f
2. a
3. e
4. b
5. j
6. d
7. g
8. c
9. h
10. i
Part B
1. h
2. i
3. e
4. f
5. b
6. a
7. d
8. c
9. j
10. g
Reading Comprehension
Part A
1. F Janie thought constantly about a device that played music.
2. T
3. F Janie found the player when she reached into the bag.
4. T
5. F When Linda put the player to “on” mode, it didn’t work.
6. T
Part B
1. a
2. b
3. a
4. b
4000 Essential English Words 4 – Answer Key
9
Unit 9
Exercise 1
Part A
1. a
2. c
3. b
4. a
5. d
Part B
1. b
2. a
3. d
4. a
5. d
Exercise 2
1. alongside
2. assist
3. rumor
4. wages
5. smashed
6. feeble
7. efficient
8. subject
9. outraged
10. forgave
Exercise 3
1. b
2. c
3. b
4. a
5. b
Reading Comprehension
Part A
1. T
2. T
3. F George was a strong boy with a large appetite.
4. T
5. F George was a lazy student who didn’t like any subjects.
6. T
Part B
1. a
2. b
3. c
4. d
4000 Essential English Words 4 – Answer Key
10
Unit 10
Exercise1
Part A
1. a
2. d
3. c
4. b
5. c
Part B
1. a
2. b
3. c
4. a
5. d
Exercise 2
1. particle / animate
2. numerous / handy
3. classify / upright
4. longing, plea
5. worthwhile, sophisticated
6. concept, review
7. isolate, diagram
8. constructed, decades
9. ferry, concede
10. refrain, surrender
Reading Comprehension
Part A
1. T
2. F Anton had a longing to become famous.
3. T
4. T
5. F Anton drew diagrams of the bacteria.
6. F The scientists took a ferry to Holland.
Part B
1. d
2. b
3. d
4. a
4000 Essential English Words 4 – Answer Key
11
Unit 11
Exercise 1
1. c
2. b
3. d
4. a
5. b
Exercise 2
1. sort
2. enchanted
3. applause
4. vain
5. diverse
6. genre
7. ceremony
8. defense
9. obstacles
10. exception
Exercise 3
Part A
1. e
2. h
3. i
4. a
5. f
6. d
7. b
8. c
9. j
10. g
Part B
1. e
2. h
3. a
4. j
5. b
6. d
7. i
8. c
9. f
10. g
Reading Comprehension
Part A
1. F Baker’s first job was to carry messages written in code to and from Resistance members.
2. T
3. T
4. F In 1940, armed soldiers entered Paris.
5. T
6. T
Part B
1. a
2. c
3. b
4. a
4000 Essential English Words 4 – Answer Key
12
Unit 12
Exercise 1
1. muscles / violence
2. bid / belly
3. timid / disrespect
4. enthusiasm / continent
5. meantime / lean
6. avenue / alternative
7. rescue / conflict
8. terrain / harsh
9. mischief / succession
10. blow / current
Exercise 2
1. continent
2. terrain
3. succession
4. avenue
5. lean
6. alternative
7. current
8. meantime
9. harsh
10. violence
Exercise 3
1. a
2. a
3. c
4. a
5. c
Reading Comprehension
Part A
1. T
2. F The North Wind did not blow the jacket off of the man.
3. T
4. F The man was the target for the North Wind.
5. F The Sun was usually timid but did teach the North Wind a lesson.
6. T
Part B
1. a
2. d
3. c
4. d
4000 Essential English Words 4 – Answer Key
13
Unit 13
Exercise 1
1. b
2. a
3. a
4. a
5. a
Exercise 2
1. autograph
2. nightmares
3. maximize
4. van
5. workout
6. irritable
7. horn
8. lag
9. warns
10. nutritious
Exercise 3
1. c
2. b
3. a
4. a
5. a
6. b
7. a
8. a
9. d
10. c
Reading Comprehension
Part A
1. F Alex has a nightmare that he fell during the race.
2. T
3. F Alex wanted to eat something nutritious for breakfast.
4. T
5. T
6. T
Part B
1. b
2. c
3. b
4. a
4000 Essential English Words 4 – Answer Key
14
Unit 14
Exercise 1
1. a
2. b
3. a
4. c
5. b
Exercise 2
1. d
2. a
3. b
4. b
5. d
Exercise 3
1. lump / brick
2. uttering / reconciled
3. shutters /sparkled
4. stale / flushed
5. crumbled / dough
6. sift / shattered
7. fist / flexible
8. mixture / sprinkle
9. expressed / slight
10. ruined / injured
Reading Comprehension
Part A
1. T
2. T
3. F The dough needed to be soft and flexible.
4. F The younger brother uttered a sigh.
5. T
6. F A slight mistake now became a major problem.
Part B
1. b
2. b
3. b
4. d
4000 Essential English Words 4 – Answer Key
15
Unit 15
Exercise1
1. await / research
2. beloved / misery
3. variety / complained
4. confused / due
5. establish / climate
6. Although / prior
7. furnace /entire
8. midst / mature
9. leash / measured
10. apply / buried
Exercise 2
Part A
1. a
2. d
3. f
4. c
5. i
6. b
7. j
8. h
9. e
10. g
Part B
1. a
2. b
3. e
4. j
5. h
6. i
7. c
8. f
9. d
10. g
Reading Comprehension
Part A
1. T
2. F Wires were applied to Laika’s skin so that scientists could know how she felt.
3. F Although Laika could not be buried, a memorial was established in her honor.
4. T
5. F In a prior launch scientists sent a man- made object into space.
6. T
Part B
1. a
2. a
3. c
4. a
4000 Essential English Words 4 – Answer Key
16
Unit 16
Exercise 1
1. misfortune, negative
2. bruise, altogether
3. sake, per
4. pleaded, disobedient
5. source, glimpsed
6. hoop, stitched
7. bound, custom
8. stern, ripped
9. thump, scraped
10. foresee, vehement
Exercise 2
Part A
1. i
2. c
3. f
4. b
5. h
6. j
7. a
8. e
9. d
10. g
Part B
1. d
2. i
3. h
4. j
5. g
6. c
7. b
8. f
9. a
10. e
Reading Comprehension
Part A
1. T
2. T
3. F There were six girls per team.
4. T
5. F Stephanie asked Gwen to try her best for the sake of the team.
6. T
Part B
1. b
2. d
3. b
4. b
4000 Essential English Words 4 – Answer Key
17
Unit 17
Exercise 1
1. lid / convenient
2. folded / shield
3. urban / exit
4. mighty / civilization
5. swayed / stormy
6. waded / reeds
7. flock / dew
8. poison / drastic
9. den / mushrooms
10. native / loomed
Exercise 2
1. poison
2. mushrooms
3. dew
4. native
5. shield
6. den
7. folded
8. flock
9. lid
10. exit
Exercise 3
1. c
2. b
3. d
4. b
5. d
Reading Comprehension
Part A
1. F Tracy invites Kara to go camping with her family.
2. T
3. T
4. T
5. F The weather is sunny on the second day.
6. T
Part B
1. d
2. a
3. c
4. d
4000 Essential English Words 4 – Answer Key
18
Unit 18
Exercise 1
Part A
1. b
2. c
3. a
4. c
5. d
Part B
1. a
2. b
3. d
4. b
5. b
Exercise 2
Part A
1. e
2. j
3. d
4. a
5. g
6. b
7. c
8. h
9. i
10. f
Part B
1. i
2. b
3. e
4. g
5. a
6. f
7. c
8. j
9. d
10. h
Reading Comprehension
Part A
1. F The title of the script was The Lost Glove.
2. T
3. F Peter declined Robby’s offer to practice together.
4. T
5. T
6. T
Part B
1. b
2. b
3. c
4. b
4000 Essential English Words 4 – Answer Key
19
Unit 19
Exercise 1
1. b
2. a
3. b
4. b
5. a
Exercise 2
1. atmosphere
2. stated
3. chapters
4. notified
5. tray
6. afflicted
7. etc.
8. aisle
9. breakdown
10. author
Exercise 3
Part A
1. f
2. c
3. g
4. i
5. d
6. e
7. b
8. j
9. a
10. h
Part B
1. e
2. g
3. c
4. h
5. j
6. b
7. d
8. i
9. a
10. f
Reading Comprehension
Part A
1. T
2. F Isaac listened to music and read a book by his favorite author.
3. T
4. F Isaac was still scared after the shaking stopped.
5. F The pilot stated that the conditions in the atmosphere were bad.
6. T
Part B
7. b
8. d
9. a
10. c
4000 Essential English Words 4 – Answer Key
20
Unit 20
Exercise 1
1. a
2. a
3. d
4. b
5. b
Exercise 2
1. sole
2. pray
3. choked
4. ceased
5. mass
6. dent
7. distrust
8. rife
9. betrayed
10. cross
Exercise 3
1. blast / choke
2. fort / treachery
3. sweep / tuck
4.sole / lining
5. distrust / betray
6. founded / ceased
7. commented / civil
8. bracelet / dent
9. mass / cross
10. rife / pray
Reading Comprehension
Part A
1. F The land near the King’s fort was rife with enemies.
2. F When Clara and Susie met, Susie was sweeping the path.
3. T
4. T
5. F Clara commented to her father that he shouldn’t distrust people.
6. T
Part B
1. d
2. b
3. a
4. b
4000 Essential English Words 4 – Answer Key
21
Unit 21
Exercise 1
1. sum 1. sum
2. vein 2. vein2. vein2. vein
3. relate 3. relate3. relate3. relate 3. relate
4. chronicles 4. chronicles 4. chronicles 4. chronicles4. chronicles 4. chronicles
5. copper 5. copper 5. copper
6. millennium 6. millennium6. millennium6. millennium 6. millennium6. millennium
7. background 7. background 7. background 7. background 7. background
8. venom 8. venom8. venom 8. venom
9. trustworthy 9. trustworthy9. trustworthy 9. trustworthy9. trustworthy9. trustworthy 9. trustworthy9. trustworthy
10. update 10. update 10. update
Exercise 2 Exercise 2 Exercise 2 Exercise 2
1. c
2. d
3. a
4. a
5. a
Exercise 3 Exercise 3 Exercise 3 Exercise 3
Part APart A Part APart A
1. f
2. i
3. j
4. e
5. b
6. a
7. h
8. c
9. d
10. g
Part BPart B Part BPart B
1. e
2. d
3. b
4. f
5. i
6. a
7. h
8. c
9. j
10. g
Reading ComprehensionReading Comprehension Reading Comprehension Reading ComprehensionReading ComprehensionReading Comprehension Reading Comprehension Reading Comprehension
Part APart A Part APart A
1. F A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were stealingstealingstealing stealingstealing .
2. T
3. F The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a poisonous poisonous poisonous poisonous poisonous poisonous snake snake.
4. T
5. F ThreeThreeThreeThree of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were scratching their hands and arms.scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms.scratching their hands and arms. scratching their hands and arms.scratching their hands and arms.scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms.
6. T
Part BPart B Part BPart B
1. d
2. b
3. c
4. d
4000 Essential English Words 4 – Answer Key
22
Unit 22
Exercise 1
1. mocking, temper
2. scribes, unity
3. hitchhiked, cozy
4. charity, goods
5. heeded, neutral
6. empire, commerce
7. victor, throne
8. reduced, pity
9. persecuted, economy
10. depleted, condemned
Exercise 2
1. goods
2. depleted
3. charity
4. persecuted
5. victors
6. hitchhiked
7. mock
8. reduced
9. unity
10. empire
Exercise 3
1. c
2. b
3. d
4. a
5. c
Reading Comprehension
Part A
1. T
2. F The trees were important to the western areas' economy.
3. T
4. F The emperor sat upon his throne, and the scribe stood in front of him.
5. F The emperor condemned the citizens of the western areas to starve.
6. T
Part B
1. b
2. c
3. d
4. a
4000 Essential English Words 4 – Answer Key
23
Unit 23
Exercise 1
1. b
2. d
3. a
4. a
5. d
6. c
7. d
8. d
9. c
10. a
Exercise 2
Part A
1. g
2. d
3. f
4. h
5. j
6. e
7. b
8. i
9. a
10. c
Part B
1. b
2. e
3. j
4. f
5. c
6. i
7. d
8. g
9. a
10. h
Reading Comprehension
Part A
1. T
2. F A tiny insect may have been the biggest factor in the death of these huge creatures.
3. T
4. F A vast majority of dinosaurs, from the vegetarians to the meat eaters, died.
5. F In addition, scientists have found the genetic material of mosquitoes in fossils.
6. T
Part B
1. d
2. a
3. b
4. a
4000 Essential English Words 4 – Answer Key
24
Unit 24
Exercise 1
Part A
1. c
2. b
3. a
4. d
5. d
Part B
1. c
2. d
3. b
4. d
5. a
Exercise 2
1. cherish / moderation
2. growl / predator
3. sane / compassion
4. snatch / saucer
5. core / foster
6. cunning / grind
7. tumbled / dizzy
8. withhold / consent
9. tense / stumble
10. equilibrium / stagger
Reading Comprehension
Part A
1. T
2. F The innkeeper staggered outside.
3. T
4. T
5. F He did not want to withhold the truth any longer. He just wanted to foster happiness.
6. T
Part B
1. d
2. b
3. d
4. a
4000 Essential English Words 4 – Answer Key
25
Unit 25
Exercise 1
Part A
1. c
2. a
3. d
4. c
5. d
Part B
1. c
2. c
3. b
4. b
5. b
Exercise 2
1. b
2. b
3. b
4. b
5. d
Exercise 3
1. hardy / traverse
2. celebrity / institute
3. migrate / aircraft
4. jealousy / esteemed
5. extinct / swamp
6. species / secluded
7. decisive / ethical
8. zoology / nurture
9. rural / overhead
10. principle / concrete
Reading Comprehension
Part A
1. F The journey on the aircraft to Australia took twenty hours.
2. F Gilbert was a professor of zoology.
3. F Gilbert was hardier than Eliza.
4. T
5. T
6. T
Part B
1. b
2. c
3. a
4. a
4000 Essential English Words 4 – Answer Key
26
Unit 26
Exercise 1
Part A
1. b
2. b
3. c
4. a
5. b
Part B
1. c
2. d
3. c
4. b
5. a
Exercise 2
Part A
1. e
2. h
3. i
4. a
5. j
6. c
7. f
8. g
9. d
10. b
Part B
1. h
2. g
3. d
4. e
5. c
6. f
7. i
8. b
9. j
10. a
Reading Comprehension
Part A
1. T
2. F It was impossible for the colonel to extinguish the fire on the plane.
3. F The plane did not have any gasoline left after the crash.
4. T
5. F The couple searched for help in the forest for three days.
6. F The forest people led Wilbur and Mary through the trees and they promptly arrived at a small town.
Part B
1. a
2. a
3. c
4. b
4000 Essential English Words 4 – Answer Key
27
Unit 27
Exercise 1
Part A
1. b
2. c
3. a
4. c
5. b
Part B
1. a
2. b
3. a
4. b
5. a
Exercise 2
1. wooded
2. distributed
3. federal
4. objective
5. exotic
6. oxygen
7. comprehensive
8. equator
9. comparative
10. beneficial
Exercise 3
1. d
2. a
3. b
4. d
5. a
Reading Comprehension
Part A
1. F Rainforests provide much of the world’s oxygen supply.
2. T
3. T
4. F These humid, wooded mountaintops are mainly in African and Central and South American countries.
5. T
6. T
Part B
1. a
2. a
3. c
4. d
4000 Essential English Words 4 – Answer Key
28
Unit 28
Exercise 1
Part A
1. d
2. d
3. a
4. a
5. c
Part B
1. c
2. a
3. c
4. b
5. d
Exercise 2
1. riot / shrine
2. paraphrased / defined
3. presently / expand
4. avail / solitude
5. fundamental / worsen
6. scribble / linger
7. horrifying / dreaded
8. incredulous / stark
9. summon / organism
10. random / plague
Reading Comprehension
Part A
1. F In 430 BCE, a horrifying plague broke out in Athens.
2. T
3. T
4. F Thucydides was incredulous that the plague was caused by the gods.
5. T
6. T
Part B
1. b
2. c
3. d
4. b
4000 Essential English Words 4 – Answer Key
29
Unit 29
Exercise 1
1. candidate / enhance
2. era / solar
3. pollute / incorporate
4. corporate / confidential
5. phenomenon / mobile
6. automobile / parallel
7. transportation / ridiculed
8. guidelines / intervals
9. modify / territories
10. tournament / interact
Exercise 2
1. pollute
2. tournament
3. parallel
4. modify
5. ridiculed
6. era
7. interact
8. incorporate
9. automobiles
10. candidate
Exercise 3
1. d
2. c
3. b
4. b
5. a
Reading Comprehension
Part A
1. T
2. T
3. F The cars incorporate solar panels onto the outside that lie parallel to each other.
4. F These cars drive over 3,000 kilometers across the Australian territories.
5. T
6. F They must stop at certain intervals to charge their batteries.
Part B
1. c
2. a
3. d
4. a
4000 Essential English Words 4 – Answer Key
30
Unit 30
Exercise 1
1. a
2. a
3. d
4. b
5. d
6. d
7. a
8. c
9. b
10. d
Exercise 2
Part A
1. i
2.d
3. b
4. j
5. g
6. e
7.f
8. a
9. c
10. h
Part B
1. j
2. h
3. e
4. a
5. f
6. b
7. i
8. c
9. g
10.d
Reading Comprehension
Part A
1. F Martin was a farmer who grew organic ginseng and poultry.
2. T
3. T
4. F Tom’s stance on discipline was too strong.
5. T
6. F The brothers could not see the land’s boundary.
Part B
1. c
2. d
3. a
4. d
1
Unit 1
Exercise 1
1. rapid / rate
2. contemporary / vary
3. humid / toxic
4. texture / aroma
5. cluster / combined
6. subtle / soothing
7. cultivated / odor
8. palate / beverage
9. condensed / divine
10. paradise / plantations
Exercise 2
Part A
1. i
2. e
3. c
4. g
5. b
6. a
7. f
8. h
9. d
10. j
Part B
1. g
2.i
3. h
4. a
5. j
6. e
7.f
8.c
9. d
10. b
Reading Comprehension
Part A
1. T
2. T
3. F The Aztecs cultivated chocolate trees on plantations.
4. T
5. F The first chocolate beverages were made by the Mayans and Aztecs.
6. T
Part B
1. a
2. c
3. d
4. c
4000 Essential English Words 4 – Answer Key
2
Unit 2
Exercise 1
Part A
1. a
2. d
3. d
4. b
5. b
Part B
1. c
2. b
3. a
4. b
5. d
Exercise 2
1. admiral
2. sour
3. Kerosene
4. conscience
5. grapefruits
6. steward
7. fiery
8. string
9. hay
10.hoop
Exercise 3
1. stake
2. flesh
3. wreck
4. accident
5. character
Reading Comprehension
Part A
1. T
2. T
3. F The admiral put branches with sharp thorns in the monkey’s cages.
4. F The steward had a good conscience.
5. F The steward was horrified because the monkeys were thin and weak.
6. T
Part B
1. b
2. b
3. c
4. b
4000 Essential English Words 4 – Answer Key
3
Unit 3
Exercise 1
1. option / idiot
2. torment / admonished
3. pinpoint / echoed
4. brag / perfect
5. switch / beware
6. eventual / pastime
7. awesome / disagreed
8. audible /conscious
9. immense / indirect
10. hint / thorough
Exercise 2
Part A
1. b
2. j
3. f
4. a
5. i
6. e
7. d
8. g
9. h
10. c
Part B
1. e
2. j
3. h
4. i
5. a
6. c
7. d
8. g
9. b
10. f
Reading Comprehension
Part A
1. T
2. T
3. T
4. F When the young man had an option of two trails, he always chose the more difficult of the two.
5. T
6. F When the young man arrived home, he knew that he had acted like an idiot.
Part B
1. d
2. b
3. a
4. a
4000 Essential English Words 4 – Answer Key
4
Unit 4
Exercise 1
Part A
1. a
2. c
3. b
4. a
5. c
6. b
7. a
8. a
9. d
10. b
Exercise 2
1. perish / oblivious
2. roost / fond
3. rim / pit
4. soars / flight
5. moan / weep
6. typical / immoral
7. except / beak
8. trivial / disapprove
9. utterly / ivy
10. slippery / damp
Reading Comprehension
Part A
1. T
2. F Eagle had a roost near the pit.
3. T
4. T
5. F Fox was oblivious to the hidden animals.
6. T
Part B
1. b
2. c
3. d
4. d
4000 Essential English Words 4 – Answer Key
5
Unit 5
Exercise 1
1. operate / cyberspace
2. recent / global
3. ignorant / weird
4. essays / edit
5. semester / index
6. fainted / lecture
7. typewritten / highlighted
8. resolution / gymnasium
9. moral / awhile
10. evaluated / private
Exercise 2
Part A
1. g
2. e
3. a
4. i
5. c
6. b
7. j
8. h
9. f
10. d
Part B
1. e
2. g
3. c
4. j
5. i
6. b
7. f
8. h
9. d
10. a
Reading Comprehension
Part A
1. T
2. F The private study rooms were downstairs.
3. F The computers in the private study rooms were operating correctly.
4. T
5. F The geography test was worth seventy percent of the final grade.
6. T
Part B
1. c
2. a
3. b
4. b
4000 Essential English Words 4 – Answer Key
6
Unit 6
Exercise 1
Part A
1. b
2. a
3. c
4. b
5. a
Part B
1. b
2. a
3. a
4. d
5. c
Exercise 2
Part A
1. g
2. c
3. b
4. j
5. f
6. i
7. d
8. a
9. e
10. h
Part B
1. e
2. c
3. j
4. b
5. f
6. d
7. h
8. a
9. i
10. g
Reading Comprehension
Part A
1. F Jack Frost likes playing tricks on folks.
2. T
3. F Jack Frost’s role is to decorate everything with frost and ice.
4. T
5. T
6. F When Jack Frost set fire to the food, the butter started to melt.
Part B
1. a
2. d
3. b
4. c
4000 Essential English Words 4 – Answer Key
7
Unit 7
Exercise 1
Part A
1. b
2. a
3. c
4. b
5. d
Part B
1. c
2. d
3. b
4. a
5. c
Exercise 2
1. a
2. c
3. b
4. d
5. d
Exercise 3
1. resources
2. rally
3. memorable
4. offense
5. account
6. obliged
7. proclaimed
8. volunteered
9. habitat
10. gratitude
Reading Comprehension
Part A
1. F The architect wanted to build a new office building.
2. T
3. T
4. T
5. F The people could not conceal their gratitude, so they cheered.
6. T
Part B
1. b
2. c
3. a
4. d
4000 Essential English Words 4 – Answer Key
8
Unit 8
Exercise 1
1. replace / conduct
2. influenced / laws
3. gripped / snapped
4. enclosed / whatsoever
5. impending / constantly
6. cracks / tends
7. device / mode
8. halted / access
9.valid / version
10. perspired / sly
Exercise 2
Part A
1. f
2. a
3. e
4. b
5. j
6. d
7. g
8. c
9. h
10. i
Part B
1. h
2. i
3. e
4. f
5. b
6. a
7. d
8. c
9. j
10. g
Reading Comprehension
Part A
1. F Janie thought constantly about a device that played music.
2. T
3. F Janie found the player when she reached into the bag.
4. T
5. F When Linda put the player to “on” mode, it didn’t work.
6. T
Part B
1. a
2. b
3. a
4. b
4000 Essential English Words 4 – Answer Key
9
Unit 9
Exercise 1
Part A
1. a
2. c
3. b
4. a
5. d
Part B
1. b
2. a
3. d
4. a
5. d
Exercise 2
1. alongside
2. assist
3. rumor
4. wages
5. smashed
6. feeble
7. efficient
8. subject
9. outraged
10. forgave
Exercise 3
1. b
2. c
3. b
4. a
5. b
Reading Comprehension
Part A
1. T
2. T
3. F George was a strong boy with a large appetite.
4. T
5. F George was a lazy student who didn’t like any subjects.
6. T
Part B
1. a
2. b
3. c
4. d
4000 Essential English Words 4 – Answer Key
10
Unit 10
Exercise1
Part A
1. a
2. d
3. c
4. b
5. c
Part B
1. a
2. b
3. c
4. a
5. d
Exercise 2
1. particle / animate
2. numerous / handy
3. classify / upright
4. longing, plea
5. worthwhile, sophisticated
6. concept, review
7. isolate, diagram
8. constructed, decades
9. ferry, concede
10. refrain, surrender
Reading Comprehension
Part A
1. T
2. F Anton had a longing to become famous.
3. T
4. T
5. F Anton drew diagrams of the bacteria.
6. F The scientists took a ferry to Holland.
Part B
1. d
2. b
3. d
4. a
4000 Essential English Words 4 – Answer Key
11
Unit 11
Exercise 1
1. c
2. b
3. d
4. a
5. b
Exercise 2
1. sort
2. enchanted
3. applause
4. vain
5. diverse
6. genre
7. ceremony
8. defense
9. obstacles
10. exception
Exercise 3
Part A
1. e
2. h
3. i
4. a
5. f
6. d
7. b
8. c
9. j
10. g
Part B
1. e
2. h
3. a
4. j
5. b
6. d
7. i
8. c
9. f
10. g
Reading Comprehension
Part A
1. F Baker’s first job was to carry messages written in code to and from Resistance members.
2. T
3. T
4. F In 1940, armed soldiers entered Paris.
5. T
6. T
Part B
1. a
2. c
3. b
4. a
4000 Essential English Words 4 – Answer Key
12
Unit 12
Exercise 1
1. muscles / violence
2. bid / belly
3. timid / disrespect
4. enthusiasm / continent
5. meantime / lean
6. avenue / alternative
7. rescue / conflict
8. terrain / harsh
9. mischief / succession
10. blow / current
Exercise 2
1. continent
2. terrain
3. succession
4. avenue
5. lean
6. alternative
7. current
8. meantime
9. harsh
10. violence
Exercise 3
1. a
2. a
3. c
4. a
5. c
Reading Comprehension
Part A
1. T
2. F The North Wind did not blow the jacket off of the man.
3. T
4. F The man was the target for the North Wind.
5. F The Sun was usually timid but did teach the North Wind a lesson.
6. T
Part B
1. a
2. d
3. c
4. d
4000 Essential English Words 4 – Answer Key
13
Unit 13
Exercise 1
1. b
2. a
3. a
4. a
5. a
Exercise 2
1. autograph
2. nightmares
3. maximize
4. van
5. workout
6. irritable
7. horn
8. lag
9. warns
10. nutritious
Exercise 3
1. c
2. b
3. a
4. a
5. a
6. b
7. a
8. a
9. d
10. c
Reading Comprehension
Part A
1. F Alex has a nightmare that he fell during the race.
2. T
3. F Alex wanted to eat something nutritious for breakfast.
4. T
5. T
6. T
Part B
1. b
2. c
3. b
4. a
4000 Essential English Words 4 – Answer Key
14
Unit 14
Exercise 1
1. a
2. b
3. a
4. c
5. b
Exercise 2
1. d
2. a
3. b
4. b
5. d
Exercise 3
1. lump / brick
2. uttering / reconciled
3. shutters /sparkled
4. stale / flushed
5. crumbled / dough
6. sift / shattered
7. fist / flexible
8. mixture / sprinkle
9. expressed / slight
10. ruined / injured
Reading Comprehension
Part A
1. T
2. T
3. F The dough needed to be soft and flexible.
4. F The younger brother uttered a sigh.
5. T
6. F A slight mistake now became a major problem.
Part B
1. b
2. b
3. b
4. d
4000 Essential English Words 4 – Answer Key
15
Unit 15
Exercise1
1. await / research
2. beloved / misery
3. variety / complained
4. confused / due
5. establish / climate
6. Although / prior
7. furnace /entire
8. midst / mature
9. leash / measured
10. apply / buried
Exercise 2
Part A
1. a
2. d
3. f
4. c
5. i
6. b
7. j
8. h
9. e
10. g
Part B
1. a
2. b
3. e
4. j
5. h
6. i
7. c
8. f
9. d
10. g
Reading Comprehension
Part A
1. T
2. F Wires were applied to Laika’s skin so that scientists could know how she felt.
3. F Although Laika could not be buried, a memorial was established in her honor.
4. T
5. F In a prior launch scientists sent a man- made object into space.
6. T
Part B
1. a
2. a
3. c
4. a
4000 Essential English Words 4 – Answer Key
16
Unit 16
Exercise 1
1. misfortune, negative
2. bruise, altogether
3. sake, per
4. pleaded, disobedient
5. source, glimpsed
6. hoop, stitched
7. bound, custom
8. stern, ripped
9. thump, scraped
10. foresee, vehement
Exercise 2
Part A
1. i
2. c
3. f
4. b
5. h
6. j
7. a
8. e
9. d
10. g
Part B
1. d
2. i
3. h
4. j
5. g
6. c
7. b
8. f
9. a
10. e
Reading Comprehension
Part A
1. T
2. T
3. F There were six girls per team.
4. T
5. F Stephanie asked Gwen to try her best for the sake of the team.
6. T
Part B
1. b
2. d
3. b
4. b
4000 Essential English Words 4 – Answer Key
17
Unit 17
Exercise 1
1. lid / convenient
2. folded / shield
3. urban / exit
4. mighty / civilization
5. swayed / stormy
6. waded / reeds
7. flock / dew
8. poison / drastic
9. den / mushrooms
10. native / loomed
Exercise 2
1. poison
2. mushrooms
3. dew
4. native
5. shield
6. den
7. folded
8. flock
9. lid
10. exit
Exercise 3
1. c
2. b
3. d
4. b
5. d
Reading Comprehension
Part A
1. F Tracy invites Kara to go camping with her family.
2. T
3. T
4. T
5. F The weather is sunny on the second day.
6. T
Part B
1. d
2. a
3. c
4. d
4000 Essential English Words 4 – Answer Key
18
Unit 18
Exercise 1
Part A
1. b
2. c
3. a
4. c
5. d
Part B
1. a
2. b
3. d
4. b
5. b
Exercise 2
Part A
1. e
2. j
3. d
4. a
5. g
6. b
7. c
8. h
9. i
10. f
Part B
1. i
2. b
3. e
4. g
5. a
6. f
7. c
8. j
9. d
10. h
Reading Comprehension
Part A
1. F The title of the script was The Lost Glove.
2. T
3. F Peter declined Robby’s offer to practice together.
4. T
5. T
6. T
Part B
1. b
2. b
3. c
4. b
4000 Essential English Words 4 – Answer Key
19
Unit 19
Exercise 1
1. b
2. a
3. b
4. b
5. a
Exercise 2
1. atmosphere
2. stated
3. chapters
4. notified
5. tray
6. afflicted
7. etc.
8. aisle
9. breakdown
10. author
Exercise 3
Part A
1. f
2. c
3. g
4. i
5. d
6. e
7. b
8. j
9. a
10. h
Part B
1. e
2. g
3. c
4. h
5. j
6. b
7. d
8. i
9. a
10. f
Reading Comprehension
Part A
1. T
2. F Isaac listened to music and read a book by his favorite author.
3. T
4. F Isaac was still scared after the shaking stopped.
5. F The pilot stated that the conditions in the atmosphere were bad.
6. T
Part B
7. b
8. d
9. a
10. c
4000 Essential English Words 4 – Answer Key
20
Unit 20
Exercise 1
1. a
2. a
3. d
4. b
5. b
Exercise 2
1. sole
2. pray
3. choked
4. ceased
5. mass
6. dent
7. distrust
8. rife
9. betrayed
10. cross
Exercise 3
1. blast / choke
2. fort / treachery
3. sweep / tuck
4.sole / lining
5. distrust / betray
6. founded / ceased
7. commented / civil
8. bracelet / dent
9. mass / cross
10. rife / pray
Reading Comprehension
Part A
1. F The land near the King’s fort was rife with enemies.
2. F When Clara and Susie met, Susie was sweeping the path.
3. T
4. T
5. F Clara commented to her father that he shouldn’t distrust people.
6. T
Part B
1. d
2. b
3. a
4. b
4000 Essential English Words 4 – Answer Key
21
Unit 21
Exercise 1
1. sum 1. sum
2. vein 2. vein2. vein2. vein
3. relate 3. relate3. relate3. relate 3. relate
4. chronicles 4. chronicles 4. chronicles 4. chronicles4. chronicles 4. chronicles
5. copper 5. copper 5. copper
6. millennium 6. millennium6. millennium6. millennium 6. millennium6. millennium
7. background 7. background 7. background 7. background 7. background
8. venom 8. venom8. venom 8. venom
9. trustworthy 9. trustworthy9. trustworthy 9. trustworthy9. trustworthy9. trustworthy 9. trustworthy9. trustworthy
10. update 10. update 10. update
Exercise 2 Exercise 2 Exercise 2 Exercise 2
1. c
2. d
3. a
4. a
5. a
Exercise 3 Exercise 3 Exercise 3 Exercise 3
Part APart A Part APart A
1. f
2. i
3. j
4. e
5. b
6. a
7. h
8. c
9. d
10. g
Part BPart B Part BPart B
1. e
2. d
3. b
4. f
5. i
6. a
7. h
8. c
9. j
10. g
Reading ComprehensionReading Comprehension Reading Comprehension Reading ComprehensionReading ComprehensionReading Comprehension Reading Comprehension Reading Comprehension
Part APart A Part APart A
1. F A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her A teller at a bank thought her fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were fellow employees were stealingstealingstealing stealingstealing .
2. T
3. F The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a The venom was taken from a poisonous poisonous poisonous poisonous poisonous poisonous snake snake.
4. T
5. F ThreeThreeThreeThree of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were of her coworkers were scratching their hands and arms.scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms.scratching their hands and arms. scratching their hands and arms.scratching their hands and arms.scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms. scratching their hands and arms.
6. T
Part BPart B Part BPart B
1. d
2. b
3. c
4. d
4000 Essential English Words 4 – Answer Key
22
Unit 22
Exercise 1
1. mocking, temper
2. scribes, unity
3. hitchhiked, cozy
4. charity, goods
5. heeded, neutral
6. empire, commerce
7. victor, throne
8. reduced, pity
9. persecuted, economy
10. depleted, condemned
Exercise 2
1. goods
2. depleted
3. charity
4. persecuted
5. victors
6. hitchhiked
7. mock
8. reduced
9. unity
10. empire
Exercise 3
1. c
2. b
3. d
4. a
5. c
Reading Comprehension
Part A
1. T
2. F The trees were important to the western areas' economy.
3. T
4. F The emperor sat upon his throne, and the scribe stood in front of him.
5. F The emperor condemned the citizens of the western areas to starve.
6. T
Part B
1. b
2. c
3. d
4. a
4000 Essential English Words 4 – Answer Key
23
Unit 23
Exercise 1
1. b
2. d
3. a
4. a
5. d
6. c
7. d
8. d
9. c
10. a
Exercise 2
Part A
1. g
2. d
3. f
4. h
5. j
6. e
7. b
8. i
9. a
10. c
Part B
1. b
2. e
3. j
4. f
5. c
6. i
7. d
8. g
9. a
10. h
Reading Comprehension
Part A
1. T
2. F A tiny insect may have been the biggest factor in the death of these huge creatures.
3. T
4. F A vast majority of dinosaurs, from the vegetarians to the meat eaters, died.
5. F In addition, scientists have found the genetic material of mosquitoes in fossils.
6. T
Part B
1. d
2. a
3. b
4. a
4000 Essential English Words 4 – Answer Key
24
Unit 24
Exercise 1
Part A
1. c
2. b
3. a
4. d
5. d
Part B
1. c
2. d
3. b
4. d
5. a
Exercise 2
1. cherish / moderation
2. growl / predator
3. sane / compassion
4. snatch / saucer
5. core / foster
6. cunning / grind
7. tumbled / dizzy
8. withhold / consent
9. tense / stumble
10. equilibrium / stagger
Reading Comprehension
Part A
1. T
2. F The innkeeper staggered outside.
3. T
4. T
5. F He did not want to withhold the truth any longer. He just wanted to foster happiness.
6. T
Part B
1. d
2. b
3. d
4. a
4000 Essential English Words 4 – Answer Key
25
Unit 25
Exercise 1
Part A
1. c
2. a
3. d
4. c
5. d
Part B
1. c
2. c
3. b
4. b
5. b
Exercise 2
1. b
2. b
3. b
4. b
5. d
Exercise 3
1. hardy / traverse
2. celebrity / institute
3. migrate / aircraft
4. jealousy / esteemed
5. extinct / swamp
6. species / secluded
7. decisive / ethical
8. zoology / nurture
9. rural / overhead
10. principle / concrete
Reading Comprehension
Part A
1. F The journey on the aircraft to Australia took twenty hours.
2. F Gilbert was a professor of zoology.
3. F Gilbert was hardier than Eliza.
4. T
5. T
6. T
Part B
1. b
2. c
3. a
4. a
4000 Essential English Words 4 – Answer Key
26
Unit 26
Exercise 1
Part A
1. b
2. b
3. c
4. a
5. b
Part B
1. c
2. d
3. c
4. b
5. a
Exercise 2
Part A
1. e
2. h
3. i
4. a
5. j
6. c
7. f
8. g
9. d
10. b
Part B
1. h
2. g
3. d
4. e
5. c
6. f
7. i
8. b
9. j
10. a
Reading Comprehension
Part A
1. T
2. F It was impossible for the colonel to extinguish the fire on the plane.
3. F The plane did not have any gasoline left after the crash.
4. T
5. F The couple searched for help in the forest for three days.
6. F The forest people led Wilbur and Mary through the trees and they promptly arrived at a small town.
Part B
1. a
2. a
3. c
4. b
4000 Essential English Words 4 – Answer Key
27
Unit 27
Exercise 1
Part A
1. b
2. c
3. a
4. c
5. b
Part B
1. a
2. b
3. a
4. b
5. a
Exercise 2
1. wooded
2. distributed
3. federal
4. objective
5. exotic
6. oxygen
7. comprehensive
8. equator
9. comparative
10. beneficial
Exercise 3
1. d
2. a
3. b
4. d
5. a
Reading Comprehension
Part A
1. F Rainforests provide much of the world’s oxygen supply.
2. T
3. T
4. F These humid, wooded mountaintops are mainly in African and Central and South American countries.
5. T
6. T
Part B
1. a
2. a
3. c
4. d
4000 Essential English Words 4 – Answer Key
28
Unit 28
Exercise 1
Part A
1. d
2. d
3. a
4. a
5. c
Part B
1. c
2. a
3. c
4. b
5. d
Exercise 2
1. riot / shrine
2. paraphrased / defined
3. presently / expand
4. avail / solitude
5. fundamental / worsen
6. scribble / linger
7. horrifying / dreaded
8. incredulous / stark
9. summon / organism
10. random / plague
Reading Comprehension
Part A
1. F In 430 BCE, a horrifying plague broke out in Athens.
2. T
3. T
4. F Thucydides was incredulous that the plague was caused by the gods.
5. T
6. T
Part B
1. b
2. c
3. d
4. b
4000 Essential English Words 4 – Answer Key
29
Unit 29
Exercise 1
1. candidate / enhance
2. era / solar
3. pollute / incorporate
4. corporate / confidential
5. phenomenon / mobile
6. automobile / parallel
7. transportation / ridiculed
8. guidelines / intervals
9. modify / territories
10. tournament / interact
Exercise 2
1. pollute
2. tournament
3. parallel
4. modify
5. ridiculed
6. era
7. interact
8. incorporate
9. automobiles
10. candidate
Exercise 3
1. d
2. c
3. b
4. b
5. a
Reading Comprehension
Part A
1. T
2. T
3. F The cars incorporate solar panels onto the outside that lie parallel to each other.
4. F These cars drive over 3,000 kilometers across the Australian territories.
5. T
6. F They must stop at certain intervals to charge their batteries.
Part B
1. c
2. a
3. d
4. a
4000 Essential English Words 4 – Answer Key
30
Unit 30
Exercise 1
1. a
2. a
3. d
4. b
5. d
6. d
7. a
8. c
9. b
10. d
Exercise 2
Part A
1. i
2.d
3. b
4. j
5. g
6. e
7.f
8. a
9. c
10. h
Part B
1. j
2. h
3. e
4. a
5. f
6. b
7. i
8. c
9. g
10.d
Reading Comprehension
Part A
1. F Martin was a farmer who grew organic ginseng and poultry.
2. T
3. T
4. F Tom’s stance on discipline was too strong.
5. T
6. F The brothers could not see the land’s boundary.
Part B
1. c
2. d
3. a
4. d
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