----The prices are _____ day by day. It’s hard to make ends meet.(收支相抵)

----I hope the terrible situation won’t continue.

A．putting up

B．going up

C．keeping down

D．going down

假如重力突然消失，下列情况不存在的是( )。

A．万马奔腾

B．川流不息

C．五光十色

D．短斤少两