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[Issue Essay]

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题目:

Analytical!

选项:

答案:

提问:

@徐小梅老师,徐老师您好,第4)题,我也看到了“至少2人”这个字眼,也是按照至少2人来算的。但我是这么理解的:原来男女共有12个人,先从5个女生中取2个人,保证了至少有两个女生,所以是C5^2; 接着,再让剩下的3个女生和7个男生合并,共10人,取3个人(此时不论男女都可以),是C10^3。然后合起来就是C5^2*C10^3。

解答:

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阅读161812
解答: 徐小梅

提问:

麻烦老师讲一下

解答:

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阅读133003
解答: sysadmin老师

提问:

老师,没看懂题目,麻烦讲解一下。

解答:

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阅读132745
解答: sysadmin老师

提问:

老师,这个题设两个都喜欢的人数=两个都不喜欢的人数为x,那喜欢a的就是4x,喜欢b的也是4x。总人数就等于x+4x+4x-x吗

解答:

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阅读132675
解答: sysadmin老师

提问:

老师,麻烦讲解一下。

解答:

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阅读132369
解答: sysadmin老师

提问:

老师,麻烦讲解一下。

解答:

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阅读130289
解答: sysadmin老师

提问:

老师,麻烦讲解一下。

解答:

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阅读130215
解答: sysadmin老师

提问:

老师,这个题的思路里,p(r)那个式子不应该是等于 —1/24吗

解答:

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阅读129839
解答: sysadmin老师

提问:

老师,麻烦讲解一下。

解答:

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阅读130013
解答: sysadmin老师

提问:

老师,麻烦讲解一下。

解答:

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阅读130591
解答: sysadmin老师

提问:

It is an oversimplified view of cattle raising to say that ( all one has to do with cattle is leave them alone while they feed themselves, corral them, and to ) drive them to market when the time is ripe. (A) all one has to do with cattle is leave them alone while they feed themselves, corral them, and to (B) all one has to do with cattle is to leave them alone to feed themselves, to corral them, and (C) all one has to do with cattle is leave them alone while they feed themselves and then corral them and (D) the only thing that has to be done with cattle is leave them alone while they feed themselves, corral them, and (E) the only thing that has to be done with cattle is to leave them alone while they feed themselves, to corral them, and 答案是C,看到原文all one的时候很困惑,不知道指什么,再看到后面的they feed themselves直接就把A排除了,感觉指代有问题,然后竖着扫了一下,发现ACDE都是这种表达,而且B乍一看太平行了,尽管句末少了一个to,当时的想法是 就算有to也不敢选,因为不确定to leave them alone to feed themselves是否改变了句意,所以就不知道该选什么了。麻烦老师讲解。

解答:

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阅读130392
解答: sysadmin老师

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