单项选择题

Techniques to employ the energy of the sun are being developed.

A. convert

B. store
C. use
D. receive
<上一题 目录 下一题>
热门 试题

单项选择题
The train came to an abrupt stop, making us wonder where we were.
A. slow
B. noisy
C. sudden
D. jumpy
单项选择题
Michael is now merely a good friend.
A. largely
B. possibly
C. just
D. rarely
相关试题