国家开放大学2022年秋学期《理工英语1》单元自测6[正确答案]

国家开放大学2022年秋学期《理工英语1》单元自测6[正确答案]单选题答案

正确答案：B

单元自测6（10分）
试卷总分:100  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.—
 
— Oh, no, Frankly speaking, I seldom do online shopping.
A.Got any good deals
B.Do you got any good deals
C.I bought many good deals online.
 
2.—
 
— I mean the best way is using your own mobile phone or computer to operate it.
A.What do you mean
B.What do you think
C.How do you think
 
3.________ is known to the world, Mark Twain is a great American writer.
A.As
B.That
C.Who
 
4.Listen to the two girls by the window. What language 
A.were they speaking
B.are they speaking
C.did they speak
 
5.If he persistsawkwardquestions, then sendhim to the boss.
A.in asking
B.to ask
C.to be asked
 
6.二、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 havethe biggest problem of dirty air. Air pollution is caused by many different things. A major kind of airpollution is the gas from cars. Statistics (统计正确) 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 makeelectricity. 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 airpollution even worse. Many major industries are also responsible for the dirty air in the around cities. Thefumes (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 heavytraffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes maykill trees and plants and cause metal to corrode (腐蚀). In some of the larger cities, these fumes endangerthe lives of human beings by contributing to lung diseases and causing early death.
 The key point of the passage is that    1    .
 
A．the cause of air pollution is people
 
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   
 
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
 
3. Why is air pollution more grave in the city than in the country    3   
 
A．Because there are larger populations in cities.
 
B．Because the air in the city is dirty.
 
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    .
 
A．heart disease B．loss of clear vision C．lung diseases
(1).__1__
A.A
B.B
C.C
(2).__2__
A.A
B.B
C.C
(3).__3__
A.A
B.B
C.C
(4).__4__
A.A
B.B
C.C
(5).__5__
A.A
B.B
C.C
 
 

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