单项选择题

The biggest reason for not using more solar power now is ______.
A ) money C) space
B) time D) pollution
<上一题 目录 下一题>
热门 试题

单项选择题
From the passage it could be inferred that Arthur Brown was not ______.
A．a scientist
B．a clever man
C．a politician
D．a successful man
单项选择题
What is this article about
A．Energy from the sun.
B．Natural gas.
C．How oil is made.
D．Saving energy.
相关试题