从45到51之间有几个数?[ ]
A.5
B.6
C.7
答案:A
----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