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问题 单项选择题

溶冰时间很重要，湿度很大，风速很小，观测前（）分钟左右进行。

A.30

B.40

C.50

答案

参考答案：C

填空题

Part 4


Questions 26-45


·Read the following passage and choose the best word for each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
During the past ten years (26) attention has been given to "telling it like it is". My impression is that this devotion to (27) one’s mind has more often led to hurt feelings and ruined relationships than (28) great joy.
I think we generally agree that never expressing real feelings and (29) all less-than-lovely thoughts about each other always leads to constructive communication. It’s a great (30) to allow ourselves to admit our human weaknesses and pursue more honest relationships with others. (31) we need to keep a balance between telling it all and telling nothing.
Recently I received a letter from a mother who had been (32) by her son to attend a weekend meeting with him. Under pressure from the group, her defenses cracked and she heard herself (33) her son for the first time that he (34) an accident—that she hadn’t been planning to have a child. He (35) told her that he couldn’t recall a single day in his childhood that he’d been happy. We cried and (36) ; I thought telling the truth had been good for us. But the trouble is, it wasn’t the whole truth. By the time Tommy was born I did want him, and at (37) he was happy. Ever since that day, we (38) . by some terrible feelings we exchanged. I must admit I’ve (39) the conclusion that some things are better left uncovered. Honesty is a fine policy, but we need a new sense of (40) . Disclosing is not a solution to every problem (41) even an end in itself. It’s useful under some circumstances and terribly hurtful under (42) . It’s a good idea, I think, to bite your (43) for ten or fifteen minutes before saying what’s (44) your mind. Try to decide whether it’s going to open up new and better ways of communication or (45) wounds that may never heal.

A．a great deal of

B．a large number of

C．many

D．many a
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单项选择题

假设证券组合P由两个证券组合Ⅰ和Ⅱ构成，组合Ⅰ的期望收益水平和总风险水平都比Ⅱ的高，并且证券组合Ⅰ和Ⅱ在P中的投资比重分别为0.48和0.52，那么______。

A．组合P的期望收益水平高于Ⅱ的期望收益水平
B．组合P的总风险水平高于Ⅰ的总风险水平
C．组合P的总风险水平高于Ⅱ的总风险水平
D．组合P的期望收益水平高于Ⅰ的期望收益水平
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