With natural resources becoming fewer and fewer, how to make use of energ

题干

With natural resources becoming fewer and fewer, how to make use of energy, such as sunlight and wind, has become our top priority.

A．primary	B．alternative
C．instant	D．unique

上一题下一题 0.65难度单项选择更新时间:2017-12-20 09:08:00

小学学科试题库

初中学科试题库

高中学科试题库