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初二教案 第746期(2)
发布时间:2021-09-06

本期配套教案共2页:  1  2

2/746期初二课件

董洁

Bugs face great danger (P6)

Pre-reading

What insects can you name?

What do you know about them?

 

While-reading

Read and answer.

1. It would be really good news if there were no insects. (T or F)

2. In the 27 years from 1989 to 2016, the number of insects fell _________.

3. What destroys the places that insects live?

4. Find the topic sentence of para 4.

5. The best place to start is with our children. (Translate)

 

参考答案:

1. F

Think about a world without insects (昆虫). It might sound nice at first. There would be no annoying (烦人的) bugs or flies in your room. But in fact, this could be really bad news.

annoying [əˈnɔɪɪŋ] adj. 烦人的 annoyed [əˈnɔɪd] adj. 恼怒的;烦闷的

in fact 事实上

 

2. by 75 percent

The number of insects has dropped a lot in recent years, according to British biologist Dave Goulson. “In the 27 years from 1989 to 2016, the number of insects fell by 75 percent,” Goulson wrote.

the number of ……的数量

according to 根据……

by 75 percent 减少75%

 

3. Pesticides.

Scientists say the main reason for this is the use of pesticides (农药). They destroy the places that insects live in.

 

4. What would happen without insects?

 

What would happen without insects? Its almost impossible to predict (预测), but the results would be far-reaching. We need insects to pollinate crops (给庄稼授粉). They also break down dead plants and animals and turn them into new useful things. We need them to keep the soil (土地) healthy and do much more. Without insects, many animals would have nothing to eat. They would go hungry and die. The ecosystem (生态系统) would be off balance.

impossible [ɪmˈpɒsəbl] adj. 不可能的 possible adj. 可能的 [ˈpɒsəbl]

result [rɪˈzʌlt] n. 结果

healthy [ˈhelθi] adj. 健康的 health n. 健康

5. 最好从我们的孩子开始。

 

 

1. What does the writer think of insects?

A. They are quiet.

B. They are helpful.

C. They grow fast.

D. They are dangerous.

 

2. According to the text, what can insects do?

a. Pollinate crops.                   b. Break down dead things.

c. Keep the soil healthy.              d. Eat animals.

A. abc           B. acd        C. abd      D. bcd

 

3. What does “this” mean in the last paragraph?

A. The use of pesticides.

B. Insect activity.

C. Balance of the ecosystem.

D. Harm to the ecosystem.

 

4. In which section of a magazine might you read this text?

A. Health and sports.

B. History and the natural world.

C. Science and the environment.

D. Travel and culture.
 

1. B. ……There would be no annoying (烦人的) bugs or flies in your room. But in fact, this could be really bad news. ……We need insects to pollinate crops (给庄稼授粉). They also break down dead plants and animals and turn them into new useful things. We need them to keep the soil (土地) healthy and do much more……

2. A. ……We need insects to pollinate crops (给庄稼授粉). They also break down dead plants and animals and turn them into new useful things. We need them to keep the soil (土地) healthy and do much more……

3. D. ... The ecosystem (生态系统) would be off balance. The first step to stop this is to let more people understand the values (价值) of the natural world, both for what it does for us and for its own sake, ”……

 

Building Your Vocabulary

annoy    the number of  possible   health   in fact

1.______, animals and plants are very important.

2. It’s ________ to finish the task by himself in such short time.

3. I hate the  _________ flies in the kitchen.

4. You need exercise to keep your body ______.

5. Do you know ________ the athletes who took part in the 32nd Olympics? 

参考答案:

1. In fact   2. impossible   3. annoying  4. healthy   5. the number of

 

 

 

本期配套教案共2页:  1  2

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