单项选择题

A．It will reduce the amount of pollutants in the air.
B．It will increase the amount of unpleasant odors from vehicles.
C．It will eventually destroy the ozone layer.
D．It will reduce the cost of running large vehicles.
<上一题 目录 下一题>
热门 试题

填空题
Although there are some modern facilities which help Mothers with housework and sometimes Fathers give a hand, working mothers are still ______.
单项选择题
A．Keep it away from heat, drafts, and humidity.B．Keep it as empty as possible.C．Wash its interior frequently.D．Set it regularly at zero degree.
A．Keep it away from heat, drafts, and humidity.
B．Keep it as empty as possible.
C．Wash its interior frequently.
D．Set it regularly at zero degree.
相关试题