问题 多项选择题

绿油是在炔烃加氢过程中生成的副产物,如不把它除去,对分离系统的影响有()。

A.降低催化剂的活性和选择性

B.缩短反应器的使用周期

C.影响精馏塔塔板分离效率

D.塔板堵塞

答案

参考答案:A, B, C, D

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