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[Issue Essay]

试题详情

题目:

Analytical!

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答案:

提问:

( Even though its per capita food supply hardly increased during ) two decades, stringent rationing and planned distribution have allowed the People’s Republic of China to ensure nutritional levels of 2,000 calories per person per day for its population. (A) Even though its per capita food supply hardly increased during (B) Even though its per capita food supply has hardly increased in (C) Despite its per capita food supply hardly increasing over (D) Despite there being hardly any increase in its per capita food supply during (E) Although there is hardly any increase in per capita food supply for 错选了E,答案是B。排除ABCD是因为代词its,前半句说了its,后半句没有第一时间解释its是指谁。尽管觉得E也有不妥之处,E的any increase应该是名词吧?副词hardly修饰名词也不对吧?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

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提问:

求问解题思路

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解答: 徐小梅老师

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!

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解答: 徐小梅老师

提问:

请问这道题的解题思路

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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。

解答:

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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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