（）列车运输等级最高。
A.快速旅客列车
B.军用列车
C.特快货物班列
D.普通旅客列车
参考答案：C
—________ will you take?
—Small, please.
A．What colour
B．What size
C．How much
D．How many
_________ many countries in Latin America have been trying to reduce gaps in income, America has allowed inequality to grow.
A．While
B．Since
C．If
D．Where
