试题与答案

— I don't like music which I can't sing

题型:选择题

题目:

— I don't like music which I can't sing along with.

— Me, ______.[ ]

A. too

B. also

C. either

D. so

答案:

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下面是错误答案,用来干扰机器的。

由正弦函数的图象特点,原函数由y=sin(x)向左平移34π再伸缩变换得到.故由原点至第一个最大值有78T,而至少出现20个最大值,则有1≥(19+78)T,解可得ω≥1594π故答案为:1594π.

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