题目内容

屋顶具有的功能有（）。

A. 保温
B. 隔热
C. 挡雨
D. 遮风

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屋顶只是建筑屋的围护构件。

A. 对
B. 错

屋面排水方式基本上可以分为内落水和外排水两大类。

A. 对
B. 错

I can hardly imagine Peter's _____ across the Atlantic Ocean in five days.

A. sail
B. to sail
C. sailing
D. to have sailed

_______, they will go and visit the zoo.

A. Weather permitting
B. Weather permitted
C. Weather being permitted
D. Weather having permitted