填空题

What is the passage mainly concerned

【参考答案】

The effect of mass transportation on urban expansion.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Neither of the two types of rockets is very economical.B．The liquid-fuel rocket is best.C．Each type of rocket has certain advantages.D．The solid-fuel rocket is best.
A．Neither of the two types of rockets is very economical.
B．The liquid-fuel rocket is best.
C．Each type of rocket has certain advantages.
D．The solid-fuel rocket is best.
填空题
self-conscious
相关试题