You can only be sure of __________ you have at present; you cannot be sure of something __________ you might get in the future.

A．that; what

B．what; /

C．which; that

D．/; that

下面这首诗，所写的节日是[ ]

中庭地白树栖鸦，冷露无声湿桂花。今夜月明人尽望，不知秋思落谁家。

A．中秋

B．重阳

C．端午

D．除夕