反应钢材的最大抗拉能力的是（）。 A．比例极限 B．弹性极限 C．屈服强度 D．极限

函数y= 2x 2x+1 的值域是（　　） A．{x|0＜x＜1} B．{x|0＜x≤1} C．{x|x＞0} D．{x|x≥0}

以长方形的一条边所在的直线为轴把长方形快速旋转起来，转动起来看到一个圆柱．______．

I suggested the meeting ______ at the manager’s office.

A．hold

B．be held

C．is held

D．is to be held

一类环境下，对强度等级为C25梁的纵向受力的普通钢筋，其混凝土保护层厚度不应小于钢筋的公称直径，且不应小于（）mm。

A.15

B.25

C.30

D.40

Questions 14-23

·Look at the ten statements for this part.
·You will hear a story about communication through time.
·Decide whetheryou think each statement is right(R) wrong(W) or not mentioned(NM).
·You will listen to it twice.
·Markyour answers on the Answer Sheet.

The meaning of time is the same in different parts of the world.

A. Right

B. Wrong

C. Not Mentioned