单项选择题

It was in 1930s that scientists first ______ the idea of the atom bomb.

A．imagined
B．contemplated
C．reckoned
D．conceived
<上一题 目录 下一题>
热门 试题

单项选择题
The ______ of seawater into drinking water is a complicated problem.
A．conversion
B．conjecture
C．concession
D．contraction
单项选择题
The reason why he ______ facts throw light on the mystery of the accident.
A．distorts
B．retorts
C．extorts
D．deforms
相关试题