单项选择题

The supply and demand of agricultural products are（）balanced.

A．on purpose
B．on average
C．in advance
D．in general

<上一题 目录 下一题>
热门 试题

单项选择题
The medicine has many functions,（）are unknown to us.

A．which of some
B．some of which
C．of which some of them
D．that some of them
相关试题