题目内容

Madame Curie is believed _________ radium (镭).

A. discovering
B. having discovered
C. to have discovered
D. to discover

查看答案

搜索结果不匹配？点我反馈

更多问题

She was made ________ at once.

A. leaving
B. to leave
C. left
D. leave

Revolution means ________ the productive forces.

A. to liberate
B. to be liberating
C. liberating
D. liberate

The watchman reported ________ the victim’s body.

A. found
B. to have found
C. to find
D. having found

I object to ________ like a good-for-nothing.

A. be treated
B. having been treated
C. treat
D. being treated