第1单元答案
开头
Answer Key
1, and 2. Answers will vary,
3. Answers will vary, Possibilities include: soccer
players, marathon runners, triathletes, boxers
1a
Answer Key
Before You Read
A.1. T:2. F (Europe);3. F;4. T
B. Predictions will vary. Reasons discussed in
the passage include: camaraderie, international
appeal, promise of wealth, simplicity, keeping
children out of trouble.
Reading Comprehension
1.c;2.c;3. b (lines 29-32); 4. C (lines 43- 45);
5. a (line 54); 6. C (lines 62-64); 7. C
Reading Skill
A.1. a date: 2500 B.C.E. (line 4); 2. a place:
China (line 5); 3. a place: Britain (line 6);
4. a date: 1840s (line 7); 5. a name: Cristiano
Ronaldo (line 24)
B.1.F (lines21-24);2. T (lines 35 -36); 3. T
(lines 43- 46); 4. T (lines 69 -71); 5. T (line 83)
Vocabulary Practice
A.1. competition; 2. unique; 3. participated;
4. victory; 5. promote; 6. responsible
B.1.a;2.a;3.b;4.a
1b
Answer Key
Before You Read
A.1. athletes; 2. Training 3. Olympics; 4. medals
B. Answers will vary.
Reading Comprehension
1.a;2.b;3.a;4. d (lines32- -37);5. b (lines
53- 59);6. d;7. b
Reading Skill
A. Note that bowling can be considered either a
team sport or a non-team sport.
Use ball:a, c,d, e, g; Don't use ball:b, f, h;
Team sports: a, C, e; Non-team sports:b, C, d, f,
g, h; Exciting to watch/Not exciting to watch:
Answers will vary.
B. Marathon runners: b, f Gymnasts:C, e;
Both: a, d
Vocabulary Practice
A.1. champion; 2. motion; 3. enhanced;
4. differentiated; 5. attrbuted; 6. psychological;
7. automatically
B.1. automatic; 2. motion; 3. psychological;
4. enhance; 5. generate; 6. genetic, 7. adjust
结尾
Answer Key
Before You Watch
A.1.d;2.e;3. a;4.b;5.c
B. Answers will vary. The vocabulary suggests
the video is about how breathing works at high
altitudes.
While You Watch
A.a.3; b.2; C. not mentioned; d.1
B. Summary Completion: 1. thinner; 2. oxygen;
3. sickness; 4. breathe; 5. lungs; 6. thicker;
7. established; 8. fire; 9. tools; 10. Biological
After You Watch
1. Answers will vary.
2. Answers will vary. Possibilities include how
mountain climbers adapt to high altitudes by
acclimating themselves gradually and using
oxygen tanks.
第二单元答案
开头
Answer Key
1. Answers will vany. 2. Physical appearance
doesn't count as much as someone's personality
and character, 3. Common approaches incude
cosmetics, beauty treatments, and cosmetic
surgery.
2a
Answer Key
Before You Read
A. Answers will vary.
B.1.c (line 4);2. d lines 40-41); 3. b (lines
75-76);4. e (lines 5-7); 5. a (lines 36- 39)
Reading Comprehension
1.a;2.c (lines 4- 5); 3. b; 4, d; 5. b (ines 76-
78):6.a;7.a
Reading Skill
1.a (lines 1-3);2. d (lines 16-17); 3. a (lines
41-45); 4. C (main idea, paragraph 6)
Vocabulary Practice
A.1. conform; 2. fundamental; 3. devote;
4. alter; 5. predominantly; 6. notion
B.1. uniform; 2. genders; 3. mate; 4. subjective
2b
Answer Key
Before You Read
A. Answers will vary. Possibilties include:
human skin protects the rest of the anatomy
and protects the body against disease-causing
organisms, water loss, and excessive sunlight.
B.1.c (lines 43- 46); 2.a (lines 49-55);3. b
(ines 65-67)
Reading Comprehension
1. b;2. b (lines 45- 47); 3. a (lines 50-54);4. C
(lines 66 -68);5.a;6. c;7.c
Reading Skill
1.a;2. b;3.a;4.b;5.a;6.a;7.a;8. b
Vocabulary Practice
A.1. crucial; 2. denote; 3. identity;
4. permanent; 5. fade; 6. chemical
B.1. criminal; 2. leisure; 3. permanent;
4. external; 5. identity; 6. maturity
结尾
Answer Key
Before You Watch
A. a. silicone; b. masks; d. Eyebrows, lashes
B.a.1;b.3;c.2;d.4
While You Watch
A.a.1;b.3;c.2;d.4
B.1.T;2.F;3.F;4.F;5.T;6. T
After You Watch
Discussion
Answers will vary. Possibilities include: 1. Silicone
masks are often used in movie making. Other
possibilities include using them as a disguise,
or as a costume for a party or for events like
Halloween; 2. Adding details to the mask is
probably the most difficult part for the artists,
while staying still while the silicone is applied is
probably the most difficult for the model.
第三单元答案
开头
Answer Key
1. Over 40,000 species appear on the World
Conservation Union's list of endangered plants
and animals. Common examples are the
big cats, pandas, wolves, some whales, and
elephants. 2. Habitats become changed by
human activity or by environmental factors.
3. Answers will vary.
3a
Answer Key
Before You Read
A.1. most European and African countries,
Greenland, the Middle East, and Central Asia;
2. The red-backed shrike travels as far as 10,900
km (6,800 mi); 3. Mostly, they are being killed
for leisure hunting as a sport, but some are klled
for food.
B. The following should be checked: What's
killing these birds? and What are people doing
to save the birds?
Reading Comprehension
1.d;2.a;3.c (lines 19-20); 4. b (lines 24-38);
5. b (lines 54-57); 6. b lines 62-64);
7. a (ine 73)
Reading Skill
A. Students find and underline words.
B.1.c2.a;3.d;4.c;5.c;6.b;7.c;8. C
Vocabulary Practice
A.1. posed; 2. locations; 3. effective; 4. ban;
5. strictly; 6. current
B.1. inevitable; 2. effective; 3. eliminates;
4. trapped; 5. incentive
3b
Answer Key
Before You Read
A.1.F;2.T;3.T;4. T
B. The following should be checked: methods of
protecting snow leopards and conflicts between
snow
， leopards and herders.
Reading Comprehension
1.d;2.d; 3.a (lines 27-30); 4. d (lines 31-34);
5.a;6. d (lines 60-61); 7. C (lines 84-86)
Reading Skill
A.1.b;2.a;3.c;4.d
B.1. silence it (lines 5-6); 2. experience poverty
(lines 41-42); 3. money from guests, fences to
protect animals, guide training (lines 61-69);
4. get a 20% bonus (lines 88 90); 5. make live
leopards more valuable so that the population
increases or stabilizes (lines 96-100)
Vocabulary Practice
A.1. stalk; 2. drag; 3. reverse; 4. enforce;
5. landscape; 6. status
B.1.b;2.a;3.a;4.a
结尾
Answer Key
Before You Watch
A.1. predator; 2. prey; 3. jaws; 4. branch
B.1. Leopards are big cats that are found in Asia
and sub-Sahara Africa. There are nine different
sub-species, and the one in the video lives in
Kruger National Park, South Africa.
2. Leopards are carnivores that have a wide diet
ranging from hooved animals to monkeys and
even reptiles, rodents, and birds. 3. Other big
cats like lions sometimes kill leopards.
While You Watch
A. (numbers given in order of sequence)1.A
leopard klls an impala; 2. A hyena runs away with
the impala; 3. The leopard klls another impala;
4. Another hyena tries to steal the impala;
5. A lion arives.; 6. The hyena runs away;
7. The lioness tries to climb a tree but an't;
8. The leopard finishes its meal.
B.a. big cat; b. jaws; C. deciding which branch will
support the weight; d. heavy
After You Watch
1. Their environments are different. Snow leopards
live at high altitudes in the mountains, and African
leopards live in open savannahs edged with trees.
Both their predators and prey are also different.
Snow leopards hunt herding animals as well as
wild prey, but the main threat to them is human
kllerses African leopards hunt a variety of wild
animals, but must avoid lions and other animals
that can kill them.2. Answers will vary.
第四单元答案
开头
Answer Key
1, Natural disasters include extreme weather
such as tornadoes, floods, hurricanes/typhoons,
as well as seismic events such as earthquakes,
volcano eruptions, and tsunamis.
2. and 3. Answers will vary.
4a
Answer Key
Before You Read
A.1. active; 2. erupted; 3. evacuation; 4. ash;
5. summit; 6. sacred
B. Mount Fuji and Popocatepetl. Predictions
may vary. Actual answers are: beliefs about
volcanoes, why scientists are concerned
Reading Comprehension
1.c;2.c (line 36);3.b;4.c;5. a (lines 65-68);
6.c (lines 49-53 and 99 -103); 7. d
Reading Skill
A.1. Answers will vary; 2. Paragraph 1: To
describe the Decade Volcano Project; Paragraph 2:
To present the goal of the project; Paragraph 3:
To present a success story from the project;
3. Answers will vary. Possibilities include: the
Decade Volcano Project aims to prepare people
who live close to active volcanoes for eruptions.
B. Answers will vary.
Vocabulary Practice
A.1. ancestors; 2. disastrous; 3. abandon;
4. dawn; 5. holy
B.1. witnessed; 2. displaced; 3. expands;
4. monitored; 5. inevitable; 6. disaster
4b
Answer Key
Before You Read
A.1.F;2.F;3. T
B. The author is generally optimistic that
scientists may be able to predict earthquakes in
the future.
Reading Comprehension
1.c;2.d;3. b;4.d;5. d (lines 64 -67); 6. C (lines
82-83); 7. a
Reading Skill
A.1.b;2.a
B.1. Natural gas pipes broke, and firefighters
used explosives.; 2. The destruction of many
buildings
Vocabulary Practice
A.1. drill; 2. schedule, random; 3. track,
massive; 4. zone
B.1. data; 2. laboratory; 3. detect; 4. precise
结尾
Answer Key
Before You Watch
A. Scientists want to learm more about the
eruption.
While You Watch
A. All the topics are mentioned in the video
except why Ballard and his team were unable to
reach Santorini's volcano (they did reach itD.
B. a. completely buried; b. last eruption was;
C. larger; d. hot-water vents
After You Watch
For question 1, the scientists learned that
bacteria are living off the Earth's energy instead
of relying on photosynthesis from the sun. For
question 2, the underlying volcano and the
tectonic plates on which it rests are still active,
so a future eruption is likely.
第五单元答案
开头
Answer Key
1 and 2. Answers will vary, 3. People on
vacation often seek a real change from everyday
life. Islands, especially isolated and exotic ones,
provide places with a slower pace and unspoiled
nature. Moreover, tropical islands have a
romantic mystique that appeals to couples.
5a
Answer Key
Before You Read
A.1.c;2.f;3.b;4.d;5.a;6.e
B.1. a travel writer looking for "the perfect
beach";2. Answers will vary.
Reading Comprehension
1.c;2.d;3.d;4.d;5. b (line 77);6. b;7. b
Reading Skill
A. Beaches in the order Stewart visited:
1. Copacabana, e; 2. Prainha, 6 3. Jericoacoara,
C; 4. Maceio, d; 5. Praia do Lelo, b
B. Words in order from top left to bottom right:
1. national; 2. sand, sea, sky; 3. marine;
4. wildness; 5. warm, honey
Vocabulary Practice
A.1. isolated; 2. ultimate; 3. eager, 4. pursuit;
5. destination
B.1. prohibited; 2. spoiled; 3. ranked; 4. diverse;
5. magnificent
5b
Answer Key
Before You Read
A.1. attraction; 2. lively; 3. impressive
B.1.310.0002.100,000; 3. over 1,000;
4. four; 5.22
Reading Comprehension
1. b; 2. b (line 23); 3. b (ines 38-39 and 45-
46); 4. d;5. C (lines 88-91); 6. C (line 94); 7. a
Reading Skill
A.1. Greenland; 2. Reykjavik; 3. Atlantic
B. From west of Thingvelir above label for
Reykjavik in a clockwise circle:d,b,c, a,e, f
Vocabulary Practice
A.1. spectacular, 2. architecture; 3. tension;
4. vehicles; 5. converted; 6. literally
B.1. cures; 2. monster, 3. naturally; 4. migrate
结尾
Answer Key
Before You Watch
A.1.b;2.b;3.a
B.1. Answers will vary. Possibilities include: The
weather would be wonderful year-round, and
it would be very relaxing. However, it could
get boring, and tropical islands are often hit by
typhoons/hurricanes. 2. fishing or aquaculture,
selling things to tourists
While You Watch
A. All four means of earning income are
mentioned.
B.1. isolated; 2. vast; 3. diversity; 4. pursuit;
5. eager
After You Watch
A. Answers will vary.
第六单元答案
开头
Answer Key
1 and 2. Answers will vary. An example of a
person who has overcome enormous physical
challenges to become one of the world's leading
physicists is Stephen Hawking. 3. Failure can be
useful itf people analyze what went wrong and
apply their understanding to doing something
better.
6a
Answer Key
Before You Read
A. Answers will vary.
B. Answers will vary. Some people enjoy the
thill of taking risks. People who are in a bad
situation may also be wiling to take risks out of
desperation.
Reading Comprehension
1.a (ines 5-6); 2. C (ine 18); 3. a; 4. C (lines
37-38);5.d;6. b; 7. a
Reading Skill
A.1.c;2.a;3. b;4.f; 5. d; 6. e (The meanings
are given below in Teaching Notes.)
B.1.b;2.a;3.b
C. Dopamine is compared to gasoline as a fuel
and autoreceptors compared to brakes for
control.
Vocabulary Practice
A.1. willing; 2. associated with; 3. minimize;
4. satisfaction; 5. compels
B.1. associated with; 2. Biological; 3. anxiety;
4. compels; 5. adapt; 6. manage
6b
Answer Key
Before You Read
A.1. Many people regard the expedition as a
success because due to Shackleton's leadership,
everyone survived in extrermely difficult
circumstances. 2. One example includes J.K.
Rowling, author of the Harry Potter books, who
was rejected by 12 publishers before she found
acceptance.
B. The specific things learned from failure will
vary with the nature of the particular failure, but
in some cases, the goal needs to be adjusted so
that it is more reasonable and likely to succeed.
Reading Comprehension
1.c;2.d;3.d (lines 44- -49);4. d (line 70);5. b
(lines 74-76);6. a;7.c
Reading Skill
A.1. Adding: moreover, 2. Contrasting: yet;
3. Similarity; likewise; 4. Emphasizing: above all;
5. Consequence: therefore; 6. Concluding: in short
B.1. However; 2. Similarly; 3. moreover,
4. Consequently
Vocabulary Practice
A.1. refine; 2. Consequently; 3. persistent;
4. reputation; 5. remind; 6. In time
B.1. move on; 2. community; 3. persistent;
4. refine; 5. reluctant; 6. outcome
结尾
Answer Key
Before You Watch
A.1. Everest; 2. K2; 3. Everest; It is better
known, and there are many guide programs.;
4. wild, violent, and unpredictable
While You Watch
A.1.T;2. F (it means "land of the pure");3. T;
4.F (53 people);5. F
B. 1. die; 2. best; 3. personality,; 4. lucky;
5. step; 6. snow
After You Watch
A. Answers will vary.
第七单元答案
开头
Answer Key
Answers will vary. Possiblities include: 1. Sugar,
caffeine, nicotine, alcohol, drugs, gambling,
shopping, computer games, etc.
2. Addictions to positive and healthy things like
exercise, eating a balanced diet, or work can be
considered OK if not excessive.
7a
Answer Key
Before You Read
A.1.b;2.a;3.c;4.e;5.g;6.d;7.h;8. f
B. Answers will vary. Current research indicates
that moderate levels of caffeine may have health
benefits although caffeine also might affect
sleep negatively.
Reading Comprehension
1.b;2. d; 3. b; 4. b (paragraph 3); 5. d (lines
41-46);6.a;7.a
Reading Skill
A. Pros: physical, ease, memory, heart trouble/
abuse; Cons: sleep, mood, sadness, blood
pressure
B.1.C;2.C;3.P:4.C;5.P:6.Cor P
Vocabulary Practice
A.1. abusing; 2. depends; 3. Furthermore;
4. severe; 5. exhibits
B.1.a;2.b;3.a;4.a;5. a
7b
Answer Key
Before You Read
A.1. Answers will vary. Solar power produces no
emissions and is infinitely renewable. However,
some areas receive limited sunlight, and solar
power cannot be generated at night. Moreover,
the solar panels are expensive. 2. wind, nuclear,
hydroelectric, and tidal power
B.1. and 2. solar power (Germany), wind power
(Europe), and nuclear power (France)
Reading Comprehension
1.a;2.c;3. c (lines 17-24);4. b;5. C (ines
73- 80);6. a (lines 85 -87);7. a
Reading Skill
A. Answers will vary.
B. Wind only: a; Solar only: b; Nuclear only: d;
Wind and Solar e, f Solar and Nuclear. none;
Wind and Nuclear: g: All three:c
Vocabulary Practice
A.1. finite; 2. substitute; 3. equivalent, 4. utilze;
5. dispose
B.1.a;2.b;3.a4.a;5.a;6. a
结尾
Answer Key
Before You Watch
A. Clockwise from upper left: 1. (snakes);
4. (paddles; 2. (kites); 3. (fans)
B.1. pipes; 2. pumps; 3. turbines; 4. tides
While You Watch
A. Power from waves is limitless and holds great
promise as an energy source.
B.1. unlimited; 2. up and down; 3. Waves;
4. Portugal; 5. survivable; 6. pump
After You Watch
A. Answers will vary.
第八单元答案
开头
Answer Key
1-3. Answers will vary, Possibilities include:
1. the Three Gorges Dam, the International
Space Station, the Large Hadron Collider, the
Chunnel and the tunnel under the Bosporus,
Dubai's Palm Islands, many skyscrapers such
as Taipei 101 and Burj Khalifa, and the world's
largest telescope being built in Chile's Atacama
Desert. 2. Stonehenge, the Pyramids, Machu
Picchu, Angkor Wat, Borobudur, and the Persian
qanat system.
8a
Answer Key
Before You Read
A.1. It was built between 605 and 611. It is
located in eastern China.; 2. Initially it was used
to transport grain from south to north, but it
also became a path for trade and for movement
of people and cultural ideas; 3. Beijing in the
north and Hangzhou in the south; 4. Today, it is
523 km (325 mi) long. and Jining is its northern
terminus.
B. Predictions will vary. Actual answer is: the
canal has facilitated north-south movement of
goods, people, and ideas in a country where
most of the major rivers run from west to east.
Reading Comprehension
1. b lines 8-10):2. d (ines 31-35);3. b;4. a;
5. d;6. a (lines 59-65);7. c
Reading Skill
A.1. best-known; 2. highway; 3. trademark;
4. lifeline
B.1. well known; 2. man-made; 3. Without;
4. lifetime; 5. day trip; 6. highlight
Vocabulary Practice
A.1. acquired; 2. economic, 3. original;
4. renovation; 5. transported
B.1.b;2.a;3.a;4.b;5.a
8b
Answer Key
Before You Read
A.1. The highway would provide easier and
more affordable transportation for people and
goods. 2. Based on what has happened in other
areas in the Amazon Basin, people will move
into a fragile ecosystem and destroy it in order
to mine gold, clear-cut lumber, or produce crops
for profit.
B. Paragraphs 1, 3, 4, and 5 address the issues
in question 1. The last three paragraphs address
the environmental concerns.
Reading Comprehension
1.a;2.b (lines 16-27);3.C4. C;5. C (lines
72-75);6. a;7.b
Reading Skill
A. The following should be checked:2, 5, 6.
B. Help: faster, better, live, jobs; Harm:
biodiversity, condition, impact, farming
Vocabulary Practice
A.1. enormous; 2. partially; 3. occurs, 4. impact;
5. practical; 6. ruining
B.1. dense; 2. ruined; 3. customers;
4. inaccessible; 5. llustrates
结尾
Answer Key
Before You Watch
A. from top to bottom:2,3,1.5, 4.
While You Watch
A. stingrays, sharks, turtle, fish, and insects
B.1.c;2.b;3.a
After You Watch
A. Answers will vary.
第九单元答案
开头
Answer Key
1. Answers will vary., Possibilities indlude: the
likelihood of Earth's inhabitants running out
of resources, the possibility of inelligent life
on other planets, and the need to understand
more about the universe. 2. Answers will vary.
Posibilities incude: humans on the moon,
sophisticated telescopes such as the Hubble,
international cooperation in developing and
manning the International Space Station.
3. Humans living outside Earth's atmosphere
have to find ways to breathe and regulate their
body temperatures, in addition to coping with
exposure to radiation, space debris, and lack
of gravity.
9a
Answer Key
1. Answers will vary., Possibilities indlude: the
likelihood of Earth's inhabitants running out
of resources, the possibility of inelligent life
on other planets, and the need to understand
more about the universe. 2. Answers will vary.
Posibilities incude: humans on the moon,
sophisticated telescopes such as the Hubble,
international cooperation in developing and
manning the International Space Station.
3. Humans living outside Earth's atmosphere
have to find ways to breathe and regulate their
body temperatures, in addition to coping with
exposure to radiation, space debris, and lack
of gravity.
9b
Answer Key
Before You Read
A.1.b;2.f;3.c;4.d;5.e;6. a
B. Predictions will vary. The passage discusses
the mining of asteroids and the colonization of
Mars.
Reading Comprehension
1.b (lines 1-4);2.b;3. C;4. a; 5. d (paragraph
5);6.c;7.c
Reading Skill
A. The following should be checked: 1 and 2.
B.1. Take, for example, SpaceX, a private
company based near Los Angeles. 2. "This is
the beginning of the new space age," says
Mason Peck, who works for NASA, the U.S.
space organization. 3. Entrepreneur Elon Musk,
the founder of SpaceX and other companies, is
spending a large part of his fortune on his own
space program.
Vocabulary Practice
A.1. capable; 2. decades; 3. precious;
4. required; 5. sustain; 6. extremely; 7. backing
B.1.T:2.F;3.T;4.T;5.F;6. F
结尾
Answer Key
Before You Watch
A.1.F;2.T;3. T:4. F
While You Watch
B.1. how spacesuits protect astronauts; 2. the
first two people who performed spacewalks;
3. tasks that spacewalkers perform;
4. why spacewalking is difficult work;
5. how spacewalkers train before going to space
After You Watch
A. Answers will vary. White seems to have really
enjoyed the experience more than anything
he'd ever done before. Amstrong thought
about how small he felt in the immensity of
space. Yang Liwei was a bit disappointed not to
have seen the Great Wall of China from space.
Williams reflected on her role as a representative
of humanity.
第十单元答案
开头
Answer Key
Answers will vary, Posibilities incude: 1. Most
people have few memories before age three.;
2. love, hate, joy or happiness, sadness or
sorrow, fear, guilt surprise, excitement, jealousy,
respect, disappointment; 3. apes such as chimps,
monkeys, dolphins, horses, parrots, dogs, and cats
10a
Answer Key
Before You Read
A.1. self- awareness; 2. emotional; 3. recall;
4. Perception
B. A. Who am 17; B. How do I remember?;
C. Why do I have emotions?; D. Can I control
how I feel?
Reading Comprehension
1.b;2.c;3. C (lines 30-32); 4. d; 5. C (lines
48-53); 6. d (lines 93-94); 7. a (dines 100-107)
Reading Skill
A. a,c,b
B.1. your mind and your thoughts, lines 7-8;
2. the ability to think about yourself and how
you're feeling, lines 26-27; 3. a region of your
brain just behind your forehead that extends to
about your ears, lines 30-32; 4. a stored pattern
of connections between neurons in the brain,
lines 42- 43; 5. a cell that is part of the nervous
system. Neurons send messages to and from the
brain., footnote 1; 6. the part of the brain that
helps form long-term memories, lines 50-52;
7. fully developed, lines 52-53
Vocabulary Practice
A.1. perspective; 2. transform; 3. vast;
4. underlying; 5. visualize; 6. reinforce
B.1. flexible; 2. presume; 3. entity; 4. welfare
10b
Answer Key
Before You Read
A.1. Answers will vary. A common definition
of intelligence is "a highly developed ability to
think logically, to understand the world around
you, and to learn things quickly."
B.1. and 2. grey parrot (words, imitation,
counting, zero concept), sheep and elephants
(face recognition), chimpanzees (making and
using tools), octopuses (emotions), dog (linking
vocabulary to photographs)
Reading Comprehension
1.b;2.b;3.c (lines29-35);4. C;
5.a (lines51-52); 6. a; 7. d (final paragraph)
Reading Skill
A. ability = skill; communicate = talk; create =
invent; imitate = reproduce; basic = elementary;
show = exhibit; action = behavior, reason = think
B. (general term first, then specific examples) 1.
other species, sheep and elephants; 2. primates,
humans and apes; 3. species, humans; 4. forms
of ntelligence, creativity and language
Vocabulary Practice
A.1. revealed; 2. mastered; 3. primitive;
4. dismiss; 5. acknowledging; 6. extraordinarily
B.1. master; 2. simulate; 3. pronounce;
4. humble; 5. acknowledge; 6. abstract
结尾
Answer Key
Before You Watch
A. Students try to remember the positions of
numbers ina grid.
B. Answers will vary.
While You Watch
A.1. recognize; 2. white squares; 3. les;
4. some human children
After You Watch
A. Young chimps do better at some memory
tests than humans.
B.1. and 2. Answers will vary.
第十一单元答案
开头
Answer Key
1, and 2, Answers will vary, 3. Answers will
vary, Students will read in the passage about the
psychological effects of different colors.
11a
Answer Key
Before You Read
A. Colors: 1. red; 2. yellow; 3. blue
Answers will vary for feelings associated with
each color.
B.1. Red signals dominance and accelerates the
heart rate; 2. Yellow is highly visible, and can be
a stimulant or a caution signal; 3. Blue is neutral
and calming. and it inhibits hunger.
Reading Comprehension
1. a;2. b (lines 14-15); 3. d (lines 29-33);4. b;
5. b (lines 62-64); 6. C; 7.a (lines 80-81)
Reading Skill
A. and B. (10 boxes clockwise from top right,
including possible answers for the blank boxes)
associated with sunlight; nature; stimulant; sad
or depressed; business, uniforms; color of sky
and sea; prisons; advertising; fire; color of blood
Vocabulary Practice
A.1. bold; 2. extracted; 3. inhibitions;
4. caution; 5. passive
B.1. neutral; 2. convey; 3. depressed;
4. package; 5. aggressive
11b
Answer Key
Before You Read
A. and B. 1.b,2.a;3. b;4. b
Reading Comprehension
1.c (line 12);2. b;3.b;4. a;5.b;6.c;7. d
Answer Key
Before You Read
A. and B. 1.b,2.a;3. b;4. b
Reading Comprehension
1.c (line 12);2. b;3.b;4. a;5.b;6.c;7. d
结尾
Answer Key
Before You Watch
A. Answers will vary.
B.1. Urban; 2. gallery; 3. emerges;
4. dimension; 5. Graffiti
While You Watch
A.1. respects, paint; 2. public, dimension;
3. pushing, edge
B.1.F (it's a wall in a train tunnel used by
graffiti artists);2. T; 3. F (colors that contrast
one another); 4.1 r
After You Watch
A.1.b;2.b;3.a
十二单元答案
开头
Answer Key
1. Answers will vary, Possibilities include:
malnutrition, unsanitary living conditions
(such as air pollution and contaminated
drinking water), and diseases like Ebola, AIDS,
the West Nile Virus, malaria, dengue, and
bird flu. 2. transplants, stem cell research,
and nanotechnology; 3. Answers will vary.
Posibilities include: MERS (Middle East
Respiratory Syndrome, a coronavirus that causes
acute respiratory llness with a high fatality rate)
or Ebola.
12a
Answer Key
Before You Read
A.1. Answers will vary. Possibilities include:
deadly diseases such as cancer and heart
disease, infectious viruses, sexually transmitted
diseases such as AIDS, general poor health
and fitness; 2. Answers will vary. Possbilities
include: identifying the human genome,
successful transplants, medications, etc.
B.a
Reading Comprehension
1. b;2. d (lines 26 -27):3. a; 4. d (lines 81-83);
5. d (lines 74-77); 6. b; 7. a (lines 95-97)
Reading Skill
A.1. line 25; 2. lines 30-31; 3. lines 96 97
B.1. a (line 25):2.c (lines 30-31); 3. d (lines
96-97)
Vocabulary Practice
A.1. priority; 2. allocate; 3. inject; 4. multiply;
5. bond; 6. Meanwhile; 7. radical; 8. thoroughly
B.1. priority; 2. allocate; 3. extensive; 4. insert;
5. meanwhile
12b
Answer Key
Before You Read
A.1. in 2003; 2. Asia; 3. Europe and Central
Asia
B. Guesses will vary. Actual answers are:
diseases that spread from animals to humans
Reading Comprehension
1. d;2. b (lines 26-30);3.d;4.C; 5. C (line 83);
6.C; 7.c
Reading Skill
A.1. No;2. No; 3. Yes; 4. No;5. No
B.1.c;2.d
Vocabulary Practice
A.1. root; 2. transmitted; 3. fever; 4. victims;
5. emergency; 6. conservative; 7. incidence
B.1.b;2.a;3. a;4. b
结尾
Answer Key
Before You Watch
A.1.a;2.e;3.c4.d
B. Answers will vary. In Western cultures, some
people, such as herbalists, use traditional plants
and medicines instead of products manufactured
by pharmaceutical companies.
While You Watch
A.1. medicinal; 2. forest; 3. wife; 4. tea
After You Watch
A.1. rain forests; 2. cure; 3. knowledge; 4. high;
5. priority; 6. native; 7. bond; 8. plant; 9. cancer;
10. urgent
B. Answers will vary.
