新视野大学英语第二版视听说教程4答案完整版(含unit test)

6.grow

7.survival

8.Plant breeders have already used preliminary information from the rice genome to create experimental strains

of rice that better resist cold and pests

9.The new map could better explain more than just rice. Rice shares a common ancestor with other cereal crops

10.While significant progress has been made in the analysis of the rice genome, the mapping of the human genes

is also making headway

Task 3

C B

D A D

Let's talk > Task 1

1.kitchens

2.opposed

3.labeled

4.completely

5.law

6.no way

7.GM ingredients

8.choice

9.Tougher

10.any content

11.the public

12.fear

13.safer

14.naturally

15.cheap

16.decide

Further listening and speaking > Further listening > Task 1

1.biotechnology

2.rejected

3.special labels

4.73 percent to 27 percent / 73% to 27%

5. a new type of tomato

6.against

7.save lives

8.improve the human condition

9.medicines

10.conventional foods

Task 2

A A

B B A

Task 3

D B A C C

Further listening and speaking > Viewing and speaking > Task 1

1.trees

2.native genes

3.black

4.onion

5.taste

6.poisonous

7.tested

8.toxic

9.fish

10.popular

11.bigger

12.food

13.normally

14.larger

15.threefold

16.genes

17.originally

18.different

19.risks

20.laboratory

21.environment

Unit 8 test

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