单项选择题

Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are ______ off.

A．avoided
B．excluded
C．screened
D．separated
<上一题 目录 下一题>
热门 试题

单项选择题
The professor gave ______ instruction to the whole class so as to make every student understand how to conduct the experiment in the lab.
A．explicit
B．afflictive
C．authoritative
D．oblivious
单项选择题
To the great disappointment of the public, the wanted in the murder case so far remains ______.
A．at large
B．in freedom
C．at ease
D．in prison
相关试题