单项选择题

I wonder who first _________ the idea of bags with gas to make balloons.

A．imagined
B．conceived
C．cherished
D．concealed
<上一题 目录 下一题>
热门 试题

单项选择题
A．areB．beC．are beingD．were
A．are
B．be
C．are being
D．were
单项选择题
The United States is trying to _________ the serious problems created by the energy crisis.
A．put up with
B．submit to
C．comply with
D．cope with
相关试题