位于出、入口处扶手装置的两端，扶手带在此改变运动方向叫（）。
A、围裙板；
B、扶手转向端；
C、护壁板；
D、外盖板
参考答案：B
Fei Junlong and Nie Haisheng said, "_____ we didn't see the Great Wall,
we felt excited when we passed over China." [ ]
A. Because
B. If
C. Although
D. As
— ______ does he look like?
— He's tall and thin. [ ]
A. Which
B. What
C. Where
