试题与答案

盐敏效应

题型:名词解释

题目:

盐敏效应

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析: 方差用来描述一组数据偏离其平均数的大小,即方差越大,这组数据就越离散,数据的波动性就越大;方差越小,这组数据就越集中,数据的波动性也就越小。预期收益率的方差越大预期收益率的分布也...

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题型:完形填空

词汇运用 用所给词的适当形式填空(共15小题;每小题1分,满分15分)

小题1:The Harry Potter series _______________ popular in the world now.(be)

小题2:I tried to pull one hand free and managed _______________ the ropes.(break)

小题3:The book tells us the story of a young boy who sailed to look for _______________ treasure.(hide)

小题4:Sandy is wondering where _______________ for help.(ask)

小题5:British people don’t like to talk about age or _______________ (weigh)

小题6:In public, you shouldn’t shout or laugh _______________ (loud)

小题7:You are old enough _______________ about manners.(learn)

小题8:Kitty was very busy with her _______________ lessons.(dance)

小题9:Don’t make too much noise while _______________ (eat)

小题10:It’s great to work _______________ with these special athletes. (close)

小题11:Some people offer to help without _______________ paid. (get)

小题12:How can we help people in our _______________ lives? (day)

小题13:He feels _______________ now than before. (confident)

小题14:It’s _______________ to do something for the Olympics.(mean)

小题15:If all of us can give a _______________ hand, the world will be much better.(help)

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