（2010•盐城）下列数值最接近实际情况的是（） A．初中生_爱下问搜题

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问题选择题

（2010•盐城）下列数值最接近实际情况的是（　　）

A．初中生的体重约为50N

B．人步行的速度约为20m/s

C．课桌的高度约为80cm

D．正常人10次脉搏的时间约为1min

答案

答案：C

单项选择题

双面水准尺的主尺是（）。

A.红面尺

B.黑面尺

C.蓝面尺

D.白面尺

选择题

She said, "There are twenty boys in my class."
She said that ______.

A. there were twenty boys in my class
B. there were twenty boys in her class
C. there are twenty boys in her class
D. there are twenty boys in my class