梯子的限高标志应设在距梯顶（）
A.0.8m
B.1m
C.1.2m
D.1.5m
参考答案：B
--Mom, guess what? I’ve won the 1st prize!
---This a celebration! Let’s go to prepare a party．
A．helps out
B．works out
C．calls for
D．pays for
* * 国际
