单项选择题

It can be inferred from the passage that a clear view of the sun's outer layer is usually vented by_______.

A．the sun's rays
B．an eclipse
C．lack of light
D．the great distance
<上一题 目录 下一题>
热门 试题

单项选择题
The purpose of the special instruments mentioned in the third paragraph_________.
A．magnify the image of the sun
B．block out the sun's intense light
C．measure the amount of energy emitted by the sun
D．photograph the sun
单项选择题
Besides its main use the noise-killing system can___________.
A．make a car lighter
B．make a car quieter
C．reduce the cost of a silencer
D．improve the performance of a silencer
相关试题