文档文本内容
Unit 13 We are trying to save the earth!
Section A (3a—Grammar Focus)
Ⅰ. 根据句意及所给汉语提示，写出句中所缺单词。
1. Don’t play a joke on him about his weight — it’s ________(残忍的).
2. You are supposed to know the ________(法律) of your own country.
3. Can these toys be ________(回收利用)?
4. These materials are widely used in ________(工业).
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5. They walked because they couldn’t ________(负担得起) a taxi.
6. To solve this problem, we need to learn more ________(科学的) knowledge.
Ⅱ. 根据句意，从方框中选择恰当的单词填空，有的需要变换形式。
reuse, shark, ecosystem, transportation, fin
1. People need to get out of their cars and use public ________.
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2. We saw two ________ in the wild zoo. They are large and have sharp (尖的) teeth.
3. Things that are ________ can be used more than once.
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4. Do fish use their ________ to swim?
5. A(n) ________ is about all the plants and animals that live in a specific (特定的)
area.
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Ⅲ. 根据句意及所给汉语提示，用恰当的短语填空。1. One third of boys in my class ________________(参加) the running race last
week.
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2. Please ________________(关掉) the TV. It’s too noisy.
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3. The doctor says fruit juice ________________(对……有害) children’s teeth.
4. If you don’t work hard now, you’ll ________________(为……付出代价) it later
when you fail your exams.
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5. They had a picnic ________________(在……顶部) of the hill.
6. Last month they ________________(采取行动) to prevent water pollution.
7. Insects are fairly low on ________________(食物链).
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8. One of his fingers was ________________(切掉) in the accident.[来
源:Z*xx*k.Com]
9. ________________(……的数量) trees has increased in the past few years.
10. Helen ________________(不再) practices the piano.
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Ⅳ. 将下列句子翻译成英语。
1. 张丽现在在图书馆看书。
____________________________________________
2. 这条街道过去很脏。
____________________________________________
3. 那个国家讲什么语言？
____________________________________________4. 我以前从来没有乘飞机旅行过。
____________________________________________
5. 他七岁时就会弹吉他。
____________________________________________
答案：
Ⅰ. 1. cruel 2. laws 3. recycled 4. industry 5. afford 6. scientific
Ⅱ. 1. transportation 2. sharks 3. reusable 4. fins 5. ecosystem
Ⅲ. 1. took part in 2. turn off 3. is harmful to 4. pay for
5. at the top of 6. took action 7. the food chain 8. cut off
9. The number of 10. no longer
Ⅳ. 1. Zhang Li is reading in the library now.
2. This street used to be dirty.
3. What language is spoken in that country?
4. I have never traveled by plane before.
5. He could play the guitar when he was seven.
