单项选择题

Many countries are increasing their use of natural gas, wind and other forms of ______ .

A．energy
B．source
C．power
D．material
<上一题 目录 下一题>
热门 试题

单项选择题
We didn't know his telephone number, otherwise we ______ him.
A．would telephone
B．would have telephoned
C．had telephoned
D．must have telephoned
单项选择题
The newspapers reported yesterday several ______ on the boundaries of these two countries.
A．incidents
B．happenings
C．events
D．accidents
相关试题