题目内容

混凝土排水明渠水深0.4～1.0m时，最大设计流速宜采用（）m/s。

A. 2
B. 1.6
C. 4
D. 3

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It can be inferred from the last paragraph that_____.

A. parents who have babies should be banned from smoking
B. less smokers regard smoking harmful than nonsmokers do
C. researchers fail to prove the harm of third-hand smoke now
D. second-hand smoke does more harm than third-hand smoke

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Where are memories stored？

A. In the nerve cell bodies.
B. In the synapses.
C. In neuron connections.
D. In connection patterns.

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The passage is mainly discussing______.

A. the difference between the old and the young in using words
B. the replacement of some words because their old fashion
C. the development of language
D. the cause of language change

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听力原文：M: Professor Day. May I see you for a minute？
W: Sure. Come on in. What's the matter？
M: I've got a problem. I need your technical writing class, so I went early to the registration area, but by the time I got to the front of the line, it was closed. See, my advisor signed my course request and everything.
W: That's a big class already. If it is closed, that means I have 50 students in it now.
M: I'm not surprised. It's a really good class and many students want to attend it.
W: Can't you take it next year？ We offer it every fall.
M: Well, that's the problem. I'm supposed to be graduating this spring. But, of course, I can't graduate without your class.
W: I see. In that case, I'll sign for you. It looks like there will be 51. Take this form. back to the registration area. They will get you in.
M: Thanks, Professor Day. I really appreciate this!
Questions 23 to 25 are based on the conversation you have just heard.
23. What is the problem of the student？
24. What do we know about this course？
25. What does Professor Day decide to do？
(20)

A. He was late for registration.
B. He wants the professor to give him a mark.
C. He cannot do well because the class is too large.
D. He needs the permission of Professor Day to register.

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混凝土排水明渠水深0.4～1.0m时，最大设计流速宜采用（）m/s。

A. 2 B. 1.6 C. 4 D. 3

It can be inferred from the last paragraph that_____.

Where are memories stored？

The passage is mainly discussing______.

A. 2
B. 1.6
C. 4
D. 3