单项选择题

Not only ______ people to send words, music, and codes to any pan of the world, it can also be used to communicate far into space.

A．enabled by radio
B．radio enables
C．does radio enable
D．has radio enabled
<上一题 目录 下一题>
热门 试题

单项选择题
A man escaped from the prison last night. It was a long time ______ the guards discovered what had happened.
A．before
B．until
C．since
D．when
单项选择题
If it ______ Professor Russel standing up for him, he would have had to leave.
A．hasn’t been for
B．hadn’t been for
C．was for
D．were for
相关试题