问题 选择题

供家用煤炉燃烧的煤制成蜂窝状,这是为了(  )

A.增加空气中的氧气体积分数

B.使煤燃烧产生的热量不易散失

C.增加煤与氧气的接触面积

D.延缓煤的燃烧时间,节约能源

答案

将煤制成蜂窝状能够增加煤与空气的接触面积,使其有效的跟空气中氧气反应,这样可以使煤更充分的燃烧,释放出更多的能量;因而家用煤炉燃烧的煤制成蜂窝状,是为了增加煤与氧气的接触面积;

故选C.

完形填空

Do you have a goal for life? What’s it? Do you want to become a writer, singer or just become a rich person?

A recent survey shows that in modern society, most people pick up practical goals, such as “earning money to buy a house and a car”, “to improve one’s life quality”, and “finding a good job”.

Wang Yu worked in a small company in Nanjing. The job was good and he didn’t have to work for extra hours. However, he felt the work was not exciting at all and the life was boring. So he gave up his job and went to Beijing in February, 2007. When he arrived in Beijing, he set his new goal as finding a good job.

Nowadays more and more people want to live a better life. This fact shows that the society is making progress and people’s life goals have become more practical. One researcher says, “Everybody has his / her own life goal, which will be surely different from people to people. If one is poor, one’s life goal will be to earn more money; if one doesn’t have a diploma, studying hard to get a diploma will become his life goal; and if one doesn’t have love, his life goal will be to look for it. But if one has no life goal, he will idle away (虚度) his lifetime.”

58. What was Wang Yu’s new goal when he arrived in Beijing? (回答词数不超过5个)

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59. What is a poor man’s life goal according to this passage? (回答词数不超过4个)

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60. What is the main idea of this passage? (回答词数不超过8个)

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单项选择题 A1/A2型题