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[Issue Essay]

试题详情

题目:

Analytical!

选项:

答案:

提问:

The Achaemenid empire of Persia reached the Indus Valley in the fifth century B.C., bringing (the Aramaic script with it, from which was derived both northern and ) southern Indian alphabets. A. the Aramaic script with it, from which was derived both northern and B. the Aramaic script with it, and from which deriving both the northern and the C. with it the Aramaic script, from which derive both the northern and the D. with it the Aramaic script, from which derives both northern and E. with it the Aramaic script, and deriving from it both the northern and 答案是C,错选了D。bringing the script with it 和 bringing with it the script 的区别不太清楚,只是感觉读起来没有后者顺,就把AB排除了。E的and并列在句中没有体现,排除。CD的derive应该指的是script,按理说应该是单数啊,为什么会选C?麻烦老师讲解。

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提问:

请问这一题的解题思路

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提问:

求问解题思路

解答:

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提问:

求问解题思路

解答:

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提问:

条件一:(30+⏹)(20+🔼)=864化简为20🔼-🔼^2=64 然后从2开始带入,得出当🔼=4时成立。条件二:⏹✖️🔼=24得出3、8和4、6两组可能解,分别带入,只有36和24成立,所以条件二充分。请问以上这个解题思路对吗,或者说有更简便的?

解答:

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解答: 徐小梅老师

提问:

第14题 请徐老师解答 谢谢!

解答:

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解答: 徐小梅老师

提问:

请问这道题的解题思路

解答:

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解答: 徐小梅老师

提问:

第13题: 听老师jj课里讲的说选C,我不太明白条件2的分析,老师上课说条件2,若st同号,上式取等号,若st一正一负时,上式是小于号。那不就可以通过条件2直接判断上式大于号不成立吗,也就是答案是No。请老师更正下我的思路。

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解答: 徐小梅老师

提问:

请徐老师讲下这两道题:这两个都做对了 但是感觉做的时候不太自信,想了一会,想听下老师的思路。谢谢老师!

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解答: 徐小梅老师

提问:

麻烦徐老师讲一下Q9,选了E。我的思路是分析rounding后estimate的最大和最小的差值。

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解答: 徐小梅老师

提问:

请徐老师讲一下Q7思路。读题是不是很明白题意说的到head的概率不是1/2。

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解答: 徐小梅老师

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