Which of the following signs can be seen on the door of a shopping mall?A. B. C. D.

问题补充：

Which of the following signs can be seen on the door of a shopping mall?

A.

B.

C.

D.

答案：

A.

B.

(答案→)C.

D.

解析：句意：下面哪一个能在一个商场的门上被看见？danger 危险； pause暂停；push推；图画D是禁止打伞。故选C。