单项选择题

We believe that a good command of the computer and a major foreign language has become the key （）great success in our modern world.

A. of
B. on
C. to
D. for

<上一题目录下一题>

热门试题

单项选择题

A. He publishes books.
B. He is an author.
C. He collects poems.
D. He works in industry.

单项选择题

A. on duty
B. on time
C. on the sport
D. on watch