问题

Scientists have achieved a major _ in the search fora cure for cancer, __ is good news for those who suffer from cancer.

A:breakthroughwhat
B:breakdownwhich
C:breakup that
D:breakthroughwhich

正确答案是：

同类题型

Does Li Hua serve in the army?—No, but he________ in the army for three years

I must be off now. My friends _____outside. [ ]

You ____ face trouble if you let out the secret. We won’t have any of that.

Who is making so much noise in the garden? — ____ the children. [ ]

You are very fond of eating barbecued mutton kebabs.— Yes. Personally, nothing can be________.Would you like one? [ ]