单项选择题

A．The destruction process of ozone layer is slowing down.
B．The ozone layer has been destroyed seriously.
C．Ozone layer can protect us from strong radiation from the sun.
D．Ozone is produced by waste gas.
<上一题 目录 下一题>
热门 试题

单项选择题
A．The boss was hard to get along with.B．The chances for advancement were limited.C．The job was not well paid.D．He would like to try something new.
A．The boss was hard to get along with.
B．The chances for advancement were limited.
C．The job was not well paid.
D．He would like to try something new.
单项选择题
A．The insufficient build-up of transporting system.B．The imbalance of talent reserves in rural and urban areas.C．The irrational allocation of social wealth.D．The information block.
A．The insufficient build-up of transporting system.
B．The imbalance of talent reserves in rural and urban areas.
C．The irrational allocation of social wealth.
D．The information block.
相关试题