单项选择题

A．A new fuel for buses.
B．The causes of air pollution.
C．Careers in environmental engineering.
D．A way to improve fuel efficiency in buses.
<上一题 目录 下一题>
热门 试题

单项选择题
A．She hasn’t called the travel agency yet.B．The man may have to reschedule his trip.C．She doesn’t know when her semester ends.D．The man should take his vacation somewhere else.
A．She hasn’t called the travel agency yet.
B．The man may have to reschedule his trip.
C．She doesn’t know when her semester ends.
D．The man should take his vacation somewhere else.
填空题
The article deals with the link between ______ and the suggestions to prevent them.
相关试题