单项选择题

A．They should cut more trees and not use any materials harmful for human health.
B．They should exploit fast-growing trees and recyclable materials.
C．They should avoid cutting down trees.
D．They should build their houses near the forests so that fresh air is available.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Ozone is an extremely inactive gas.B．Ozone only exists in the upper atmosphere.C．Ground-level ozone is closely related to people’s health.D．Children breathe more air per pound of body weight than adults.
A．Ozone is an extremely inactive gas.
B．Ozone only exists in the upper atmosphere.
C．Ground-level ozone is closely related to people’s health.
D．Children breathe more air per pound of body weight than adults.
单项选择题
A．She’ll take the course together with the man.B．She’ll not take the course if the man takes it.C．She’ll not take the course for having to look for a job.D．She’ll not take the course for having already taken other courses.
A．She’ll take the course together with the man.
B．She’ll not take the course if the man takes it.
C．She’ll not take the course for having to look for a job.
D．She’ll not take the course for having already taken other courses.
相关试题