单项选择题

By moving the radar beam around slowly in circles, we can ______ the surroundings.

A．explore
B．expose
C．exploit
D．expand
<上一题 目录 下一题>
热门 试题

单项选择题
At no time ______ what was happening.
A．the President was aware of
B．the President was aware about
C．was the President aware of
D．was the President aware on
单项选择题
The clock ______ and we realized it was two o'clock.
A．hit
B．struck
C．knocked
D．rang
相关试题