24秋国开电大秋云南开放大学理工英语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）答卷

单元自测6（10分）

试卷总分:90 得分:100

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. — ?A:?????????????????are the most popular things people buy online?渝粤题库

— ?B:?Definitely, clothes.?

A. How about?国开形成性考核答案

B. What do you think

C. How do you think

答案:

2.— ?????????????????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。

— ?I mean the best way is using your own mobile phone or computer to operate it.?国开形成性考核答案

A. What do you mean?

B. What do you think?

C. How do you think?

答案:

渝粤搜题

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

A. don't you

B. do I

C. do you

答案:

4.Miss Liu doesn't mind _______ your homework as long as it is done by yourself.?

A. ?you to delay handing in ?

B. your delaying handing in渝粤搜题一网一平台答案

C. your delaying to hand 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

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.一网一平台答案

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 .渝粤搜题

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。

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

2. What is the purpose of this passage? 2

A．to persuade people to stop polluting the air

B．to tell the causes of 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。

C．to tell why cities are bad places to live

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

A．Because there are larger populations in cities.

B．Because the air in the city is dirty.

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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

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

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。

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

(1).__1__渝粤教育

A. A

B. B

C. C

答案:

(2).__2__渝粤教育

A. A

B. B

C. C

答案:

(3).__3__

A. A国家开放大学作业答案

B. B

C. C

答案:

(4).__4__

A. A

B. B国开形成性考核答案

C. C

答案:

(5).__5__

A. A

B. B

C. C国开形成性考核答案

答案: