求．_爱下问搜题

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问题问答题

求

．

答案

参考答案：设n≤x＜n+1，有nπ≤xπ＜(n+1)π．于是
[*]
即
[*]
命n→∞，由夹逼定理得
[*]

填空题

选择正确的单词填空。

Have, visit, How, going, doing, by

1. I'm going to              Stone Forest.
2. Where are you              ?
3.              do you go there?
4. What are you              now?
5. We are going              plane.
6.             a good time.

不定项选择

药物的四气是指（）。

A．辛．甘．苦．酸

B．寒．热．温．凉

C．温．清．补．泻

D．升．降．浮．沉

E．以上均非