24秋国开电大春陕西开放大学理工英语1单元自测6（10分）答卷参考答案

单元自测6（10分）答卷

单元自测6（10分）

试卷总分:90 得分:100渝粤搜题

一、选择填空：阅读下面的对话或句子，从A、B、C三个选项中选出一个能填入空白处的最佳选项。

1. — ?????????????????

— ?I mean the best way is using your own mobile phone or computer to operate it.?

A. What do you mean?渝粤搜题

B. What do you think?

C. How do you think?

答案:

2.— ?A:?????????????????are the most popular things people buy online?

— ?B:?Definitely, clothes.?

A. How about?渝粤搜题

B. What do you think

C. How do you think渝粤搜题渝粤题库，我们的目标是要做全覆盖、全正确的答案搜索服务。

答案:

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3.I suppose you know everything about that event, ________ ?

A. don't you

B. do I国家开放大学作业答案

C. do you

答案:

4.?I’m ?????????a business trip for APEC summit, sir.?

A. on

B. for

C. in

答案:

5.二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。

Air pollution渝粤题库，我们的目标是要做全覆盖、全正确的答案搜索服务。

People and air pollution are often in the same places. This means that cities with large populations have?the biggest problem of dirty air. Air pollution is caused by many different things. A major kind of air?pollution is the gas from cars. Statistics (统计资料) show that 93 percent of all auto trips are within cities.

Another major kind of dirty air is the burning of coal and oil for energy. This energy is needed to make?electricity. Of course, much more electricity is used in the city than in the country.

On the average, we throw away more rubbish than the year before. The burning of rubbish makes air?pollution even worse. Many major industries are also responsible for the dirty air in the around cities. The?fumes (烟) from iron, steel, chemical, and petrol production add particles (微粒)??to the air.

The effects of air pollution range from mild headaches to death. The levels of pollution found in heavy?traffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes may?kill trees and plants and cause metal to corrode (腐蚀). In some of the larger cities, these fumes endanger?the lives of human beings by contributing to lung diseases and causing early death.

The key point of the passage is that 1 .

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A．the cause of air pollution is people一网一平台答案

B．the causes and the effects of air pollution are both found in cities

C．the effects of air pollution range from headaches to death

2. What is the purpose of this passage? 2

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A．to persuade people to stop polluting the air

B．to tell the causes of air pollution

C．to tell why cities are bad places to live渝粤题库，我们的目标是要做全覆盖、全正确的答案搜索服务。

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3. Why is air pollution more grave in the city than in the country? 3

A．Because there are larger populations in cities.

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B．Because the air in the city is dirty.渝粤教育

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C．Because there are much more gas fumes from cars and burning of coal and oil for energy in the city than in the country.

4. The fumes from coal and oil may cause metal 4 .

A．to corrode ???????????B．to twist ??????????????C．to turn black

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5. In larger cities, the fumes from coal and oil may contribute to 5 .

A．heart disease ???????B．loss of clear vision ??????????C．lung diseases

(1).__1__

A. A国开搜题

B. B

C. C

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(2).__2__

A. A

B. B

C. C

答案:

(3).__3__

A. A

B. B

C. C

答案:

(4).__4__

A. A

B. B

C. C

答案:

(5).__5__

A. A

B. B

C. C

答案: