课后练习参考答案

课后练习参考答案

Unit 2

Topic 1 Section A

※课后练习I.1-5 ACCCB 6. B II. 1. goodness 2. butterflies 3. waste 4. several 5. villagers 6. pour III.1. What has happened 2. The flowers and grass have gone. 3. what a mess 4. What about the West Hill 5. Of course not. Ⅳ.1. childhood 2. with 3. again 4. changed 5. surprise 6. including 7. used 8. left 9. worse 10. memories

Topic 1 Section B

※课后练习I.1-5 ACBCA 6. C 7. A 8. A II. 1-5 CCACB

Topic 1 Section C

※课后练习I. 1. B 2. C 3. D 4. B 5. A II. 1-5 BADCD

Topic 1 Section D

※课后练习I.1-5 DDCDC II. 1. creates 2. blood 3. in many ways 4. coal III. 1-4 CDAB Ⅳ. 1. pollution 2. hear 3. more 4. serious 5. Dirty 6. harm 7. pollute 8. pollution 9. from 10. keep

Unit 2

Topic 2 Section A

※课后练习I.1-5 CBADA 6. C II. 1. sand 2. completely 3. desert 4. Although 5. reduce III.1. somewhere 2. Nobody 3. everywhere 4. someone/somebody 5. Nothing Ⅳ. 1. What causes these sandstorms 2. stop the water from washing the earth away 3. Cutting down trees is harmful to 4. we need to protect the environment 5. A lot of rich land has changed into desert.

Topic 2 Section B

※课后练习I.1-5 CBACB II. 1. punished 2. behavior 3. rude 4. wild 5. spit III. 1-5 BDACE

Topic 2 Section C

※课后练习I. 1-5 DDBCA II. 1. escape 2. risen 3. directly 4. holes 5. formed III. 1-5 BABDC

Topic 2 Section D

※课后练习I. 1-5 BCDAC II. 1. laws 2. discover 3. thirsty 4. Nearly 5. avoid III. 1. The panda is in danger of dying out. 2. Cutting down too many trees is harmful to the earth. 3. Plastic bottles can be recycled. 4. Factories pollute the land and water.

Unit 2

Topic 3 Section A

※课后练习I. 1-5 BAAAB 6. A II. 1. recycled 2. organizations 3. nodded 4. plastic 5. agreement III. 1. protection 2. nodded 3. agreement 4. recycles 5. collect Ⅳ. 1. My main job is to help spread the message about protecting the environment. 2. What can we do at home to protect the environment?

3. We should use both sides of paper and reuse plastic bags.

4. Recycling can protect the environment, and it can save money, too.

5. We encourage students to collect waste paper and soft drink cans.

Topic 3 Section B

※课后练习I. 1-5 BAABC II. 1. electricity 2. Actions 3. clothes 4. Protecting III. 1-5 ABDCC

6-10 BCBAC

Topic 3 Section C

※课后练习I. 1-4 DACC II. 1-5 DBCBA

Topic 3 Section D

※课后练习I. 1-5 AADBD II. 1. replace 2. insects 3. dry 4. removed 5. planters III. 1. sunny 2. went 3. started 4. collected 5. tell 6. importance 7. after 8. Though Ⅳ.1. We ought to shut off the light when we leave. 2. I’m greener person, so I plant trees. 3. We must use bike to reduce air pollution.

课堂小测及写作训练参考答案

课堂小测——Unit 2 Topic 1

I. 根据汉语意思写出单词。

1. mess

2. shame

3. several

4. waste

5. pollute

6. pain

7. bear

8. harmful

9. deaf

II. 根据音标写出单词和汉语意思。

1. awful 很坏的，极讨厌的

2. produce 生产，制造

3. print 印刷

4. recently 不久前；最近

5. coal 煤；煤块

6. sentence 句子；宣判

7. create 造成；创造

8. blood血

9. planet行星

III. 根据汉语意思写出短语。

1. What a mess!

2. What a shame!

3. pour…into

4. cut down

5. get a pain in…

6. produce terrible gas

7. make too much noise

8. in a good/bad mood

9. be harmful to/do harm to/be bad for 10. care for 11. make a mess of… 12. throw around 13. go deaf 14. lose one’s hearing/hearing loss 15. no better than 16. breathing problem 17. in their fields 18. all sorts/kinds of 19. high blood pressure IV. Topic重点语法

1. Have kept

2. cooked

3. were; have gone

4. Have seen; did see

5. has made came

6. Have been

7. has lost

8. have studied were

9. have known 10. have finished

V. 根据汉语(提示词)补全句子。

1. there are pouring

2. is reported; no better than

3. How long has he been like this?

4. Noise makes people feel uncomfortable

5. Trees can prevent the wind from blowing; away

6. We should try our best to protect the environment.

7. As we know, the environment; is becoming worse and worse

8. There are some people waiting for the bus at the bus stop.

VI. 情景交际。

1. I have had a cold for three days

2. what a mess

3. Who is your best friend

4. what did you do

5. Let’s play football/soccer

Topic写作强化训练

I. 根据提示把下面的范文补充完整。

1. is becoming worse

2. There are many kinds of pollution

3. It’s harmful to our health.

4. to protect the environment

5. the world will be a beautiful place

II. My hometown lies at the foot of a small hill. A small river passes by it. There was a chemical factory to the south of my hometown two years ago. It sent out a great deal of waste gas into the air and poured lots of waste water into the river. The terrible pollution was harmful to us as well as to the environment.

Nowadays the government has done something to protect the environment and prevent it

from being polluted. Now, my hometown is becoming more and more beautiful.

课堂小测——Unit 2 Topic 2

I. 根据汉语意思写出单词。

1. sand

2. although

3. none

4. rubbish

5. wild

6. nobody

7. worst

8. situation

9. punish 10. perhaps 11. hole

II. 根据音标写出单词和汉语意思。

1. everybody 人人，每个人

2. form 形成；种类

3. rise 上升；起床；升起

4. avoid 防止，避免

5. discover 发现，找到

6. thirsty 缺水的；（口）渴的

7. nearly 几乎，将近

8. law 法律；定律

III. 根据汉语意思写出短语。

1. change into/turn into

2. stop/prevent…(from) doing sth.

3. blow away

4. wash away

5. human beings

6. a number of

7. come into being

8. come to realize

9. die out 10. be short of/the shortage of 11. here and there 12. walk on grass 13. worst of all 14. in the beginning 15. take away 16. pass through 17. the greenhouse effect 18. the level of the oceans 19. refer to 20. day by day 21. be covered with… 22. pass laws against… 23. avoid doing sth.

IV. Topic重点语法

1. somewhere

2. Nobody

3. everywhere

4. someone/somebody

5. Nothing

6. Either

7. Neither

8. none

9. Both 10. All

V. 根据汉语(提示词)补全句子。

1. As; changed/turned into

2. in public

3. stop/prevent from blowing away

4. Cutting down too many trees is harmful to our environment.

5. is blowing strongly with lots of sand

6. have come to realize the importance of protecting animals

7. give me something to drink

8. were either too big or too small; I didn’t buy one

VI. 情景交际。

1. What causes these sandstorms

2. we need to protect the environment

3. That’s right.

4. I’m sorry to hear that.

5. What bad weather!

Topic写作强化训练

I. 根据提示把下面的范文补充完整。

1. drink water

2. water is very important for us

3. to save water

4. turn off the tap

5. use the water to do something else

II. Dear Editor,

My name is Li Kang. Yesterday, I saw a chemical factory pouring some waste into the river near here on my way home. The water is so dirty, and it smells terrible. It is difficult for me to breathe. What’s more, the animals and a lot of fish in the river have already died. All the flowers and grass have gone. Everything has been changed. I think it’s our duty to protect the environment.

Please save our river, save our city and save our environment.

Yours,

Li Kang

课堂小测——Unit 2 Topic 3

I. 根据汉语意思写出单词。

1. nod

2. agreement

3. hurry

4. action

5. technology

6. require

7. German

8. wheel

9. guide 10. deep

II. 根据音标写出单词和汉语意思。

1. anybody 任何人，无论谁

2. marry 嫁；娶；结婚

3. weight 重量；分量/wait 等待

4. product 产品，制品

5. video 录像带；录像

6. allow 允许，准许

7. difference 差别；差异

8. dry 干燥的，雨少的；使……干

III. 根据汉语意思写出短语。

1. save money

2. soft drink cans

3. hurry up

4. ought to do sth.

5. shut off

6. a short distance

7. after all

8. up to

9. a top speed of 10. run out 11. renewable sources 12. produce electricity 13. tree planter

IV. Topic重点语法

1. while

2. so

3. Not only; but also

4. Either; or

5. and

6. or

7. bu t

8. Though

V. 根据汉语(提示词)补全句子。

1.Easier said, done

2. spread protecting

3. Actions words

4. reach per hour

5. To solve; searching for

6. We use sunlight to produce power.

7. Would you mind shutting off the power when you leave the room?

8. We ought to put the litter/rubbish into the dustbin.

9. The government encourage us to sort the rubbish/waste at home. 10. My father drank a glass of milk instead of tea this morning.

VI. 情景交际。

1. Recycling can protect the environment, and it can save money, too.

2. We encourage students to collect waste paper and soft drink cans.

3. use both sides of the paper

4. I could travel around the world some day. / to travel around the world one day.

5. Would you like to be

Topic写作强化训练

I. 根据提示把下面的范文补充完整。

1. The environment is becoming

2. to protect the environment

3. to protect the environment

4. reduce the waste we produce

5. here and there/everywhere

II. The earth is our home. However, humans cut down many trees. They throw litter around and pour waste into the sky or the river. They pollute our earth and make it become dirty. What’s worse, the bad environment is harmful to our health.

So we must do something to protect the earth. First, we should save water and electricity. Second, don’t throw litter everywhere and keep our environment clean. Third, we should learn to recycle waste to cut down pollution.

I believe the world will be more pleasant because of our effort.