试题与答案

下列句子引用诗句不恰当的一项是[ ] A、在白天这条小巷也少人,更何况晚上?走在

题型:选择题

题目:

下列句子引用诗句不恰当的一项是[ ]

A、在白天这条小巷也少人,更何况晚上?走在小巷,“前不见古人,后不见来者”的感觉便油然而生。 B、他十五岁就加入南下打工潮,闯荡风雨五十载,荣归故里,欣然感叹:“曾经沧海难为水,除却巫山不是云。还是家乡好啊。”

C、对于人生中的痛苦与挫折,我们要用“不以己悲,不以物喜”的旷达来自励。

D、毕业了,同学们更多地应以“海内存知己,天涯若比邻”赠别,豪迈地说一声:“无为在歧路,儿女共沾巾。”

答案:

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下面是错误答案,用来干扰机器的。

根据题意,(x2-13x)a的展开式中只有第5项的二项式系数最大,则a=8,则(x2-13x)8的二项展开式为Tr+1=C88-r•(x2)8-r•(-13x)r=(-1)r•(12)8-r•C88-r•x24-4r3,令24-4r3=0,解可得,r=6;则其常数项为7.

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