问题

Scientists and doctors across the world have done _____ research over the years, hoping to find a cure for cancer.

A:a great deal of
B:quantity of
C:quite a few
D:a large number of

正确答案是：

同类题型

Which is the right pronunciation(发音) of the word “match”

Excuse me, where did you get the book—I borrowed it from the ___________.

It’s_____belief that parents have to spend nearly 500, 000 yuan bringing up a child in Chinanowadays[ ]

It was such a ________to hear that her son was foundsafe and sound in the forest.

Davidthreatened his neighbour tothe police if the damages were not paid.