问题

It is the prevention of disease_____ itssuccessful treatment that has led to the rapid increase of the world’spopulation

A:which
B:since
C:that
D:before

正确答案是：

同类题型

In front of me_______, where many athletes from all over the world will compete for Olympic gold medals.

下列所给词语的划线字解释错误的一项是

Could you_____ me this book please, Daniel— Sorry, but I_____ it for only half an hour. I haven’t finished it.

下列各句中，熟语运用有误的一项是（）

___ while reading the English textbook Luckily, my roommate woke me up intime!