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通途英语听说4级别答案 Unit10
2024年01月15日

UNIT 10 THE FUTURE OF FOOD

 

THINK AND DISCUSS (page 181)

1. Answers will vary.

2. Possible answer: Genetically modified food refers to food

produced from organisms whose genetics have been changed

in a way that is not natural, usually to enhance certain

characteristics.

EXPLORE THE THEME (pages 182–183)

1. Possible answer: The goal of the Svalbard Global Seed Bank is

to store and keep secure a wide variety of crop seeds.

2. Possible answer: This remote location was probably chosen

because it is a natural refrigerator for the seeds and is far away

from the effects of possible natural or man-made disasters.

3. Possible answers: Doomsday means a time of danger or crisis.

This name was probably chosen for the seed bank in Norway

because the seeds will be useful if disaster strikes crops on

earth.

4. Answers will vary.

LESSON A 

Vocabulary

B (page 184)

1. by means of

2. offset

3. intense

4. invaluable

5. detrimental

6. skeptics

7. resistance

8. cultivate

9. advocate

10. drawback

C (page 185)

1. prove

2. to, for

3. clearly, potentially, particularly

4. effect

5. of, to

6. serious

7. to

8. show

D Personalizing (page 185)

Possible answers:

1. I tend to be a skeptic about achieving world peace.

2. I generally advocate for animal rights.

3. A drawback of GM foods is there may be risks to our health.

4. Music has a detrimental effect on my studies.

5. Oil has been invaluable to the development of my country.

A LISTENING A Lecture about GM Foods

BEFORE LISTENING

A Prior Knowledge (page 186)

Possible answers:

 

WHILE LISTENING

B Listening for Main Ideas (page 186)

1. Yes

2. Yes

3. No

4. Yes

5. No

C Note Taking (page 187)

1. genes

2. lettuce

3. killers

4. insects

5. flow

6. accustomed

7. vegetables

8. 2010

9. five/5

10. children

11. Skeptics

12. resistance

AFTER LISTENING

D (page 187)

1. genes

2. characteristics

3. concerns

4. Approval

5. GM salmon

6. popular

7. benefits

8. resistant

A SPEAKING

A Critical Thinking: Evaluating (page 188)

Possible answers:

 

B Referring to Group Opinions (page 189)

Answers will vary.

C Critical Thinking: Evaluating (page 189)

Possible answers:

A benefit of traditional breeding is that there may be fewer

negative effects on the environment because the process is more

natural. A drawback is that creating a successful hybrid may take a

long time. A benefit of interspecies crosses might be the creation

of new crops that we never could have imagined. A drawback

is that the failure rate could be high. A benefit of genetic

modification is that scientists can target the exact characteristic

they want to change. A drawback is that not enough is known

about the side effects of eating GM foods.

D Critical Thinking: Categorizing (page 190)

1. IC

2. GM

3. TB

4. GM

5. TB

6. IC

E (page 190)

Answers will vary.

LESSON TASK Role-playing a Town Hall Meeting

A–B (page 191)

Answers will vary.

 

VIDEO Farming the Open Ocean

BEFORE VIEWING

A (page 192)

Possible answers:

1. Similarities: Both require the right environment, nutrients to

feed the crop/fish, and protection from threats to healthy

growth.

Differences: Ease of accessing the crops/fish, effects of drought

on crops/fish, development of techniques/equipment

2. Panama is located in Central America and is bordered by both

the Pacific and Atlantic oceans. Its location makes it easy to

bring in supplies and equipment and allows easy access to the

fish farm in the ocean.

WHILE VIEWING

B Understanding Main Ideas (page 192)

1. Yes

2. Yes

3. No

4. No

5. Yes

C Understanding Details (page 193)

1. land

2. founder

3. materials

4. markets

5. tons

6. labor

7. productivity

8. opportunity

D (page 193)

1. detrimental

2. intense

3. drawback

4. cultivating

5. by means of

6. invaluable

AFTER VIEWING

E Critical Thinking: Reflecting (page 193)

Possible answers:

1. Yes, because the fish farm can be moved to be near

transportation and markets. Also, the fish are clean, and there’s

a lot of potential for productivity.

No, because these farms still pollute the ocean, and these fish

aren’t as healthy to eat as wild-caught fish.

2. Because these fish farms are farther out in the ocean, they

might endanger the natural habitats of wild fish. They may also

drive traditional fish farms out of business.

 

LESSON B Vocabulary

B Meaning from Context (page 194)

1. output

2. coincided

3. root

4. exceed

5. calling for

6. scenario

7. inadequate

8. surge

9. opt

10. ample

C (page 195)

1. d

2. h

3. a

4. b

5. c

6. i

7. e

8. j

9. g

10. f

D (page 195)

1. hopelessly

2. of

3. a celebration

4. time

5. expectations

6. case

7. in

8. with

9. low

10. for

E (page 195)

Possible answers:

1. The choice of restaurants in my neighborhood is hopelessly

inadequate.

2. The root of last year’s failed harvest was the flooding we had.

3. The bountiful harvest this year calls for a celebration.

4. We have ample time to cook dinner.

5. The food at that restaurant exceeded our expectations.

6. Complete destruction of crops by the storm is a worst case

scenario.

7. There has been a surge in interest in eating healthy foods.

8. The restaurant opening coincided with the release of the

chef’s new cookbook.

9. Compared with ocean farming, land-based farming has low output.

10. I usually opt for brown rice when given the choice.

F Personalizing (page 195)

Answers will vary.

B LISTENING A Conversation about Food Prices

BEFORE LISTENING

A Prior Knowledge (page 196)

1. Possible answer: Food in the U.S. and in Singapore could be

relatively less expensive than in the other countries, or income

in the other countries could be comparatively lower.

2. Answers will vary.

3. Possible answer: shortages or surpluses

WHILE LISTENING

B Listening for Main Ideas (page 196)

1. T

2. T

3. F

4. NG

5. F

C (page 197)

1. Problem: Food prices are out of control. Suggestion: Someone

really has to do something about it.

2. Problem: Inadequate food supplies. Suggestion: Why don’t

they just start planting more food on more land?

3. Problem: People lack access to affordable food. Suggestion:

Somebody needs to make sure people have access to food at

reasonable prices.

4. Problem: Large areas of Africa and Asia may become deserts.

Suggestion: Something needs to be done about it before it’s

too late.

D Listening for Details (page 197)

1. food shortages

2. a/one third/1/3

3. (more) expensive foods/meat and dairy

4. half/1/2 a kilogram

5. 42(%)

6. restrictions on exports

7. Africa and Asia

8. (on) existing farmland

AFTER LISTENING

E Critical Thinking: Analyzing (page 197)

Answers will vary.

B SPEAKING

A (page 198)

Possible answers:

We recommend that the country start using GM crops that are

resistant to pests.

We propose that the government initiate a marketing campaign

with our allies.

It is essential that overfishing be stopped.

It is imperative that island restaurants be inspected for cleanliness

and quality.

We suggest that all schoolchildren be checked for nutrition

problems.

We recommend that the country create an agricultural college to

train more farmers.

B (page 199)

1. I could have told you it was going to rain.

2. They must have raised the price again.

3. I’ll have to get some next time.

4. I could have told you that.

5. Someone really has to do something about it.

6. I would have brought home lamb for dinner.

7. And I certainly wouldn’t have had any trouble buying rice!

8. We’re going to be in trouble.

C (page 199)

Answers will vary.

FINAL TASK Making a Formal Proposal

A–D (page 200)

Answers will vary.



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