大全补充16题

17.   There has been a 30- to 40-fold increase in the incidence of malaria caused by increasing mosquito resistance against pesticides.

(A) increase in the incidence of malaria caused by increasing mosquito resistance against

(B) increase in the incidence of malaria because of increasing resistance of mosquitoes to

(C) increasing malaria incidence because of increasing resistance of mosquitoes to

(D) incidence of malaria increase caused by increasing mosquito resistance against

(E) incidence of malaria increase because of increased mosquito resistance to

答案是B   D 为什么不对呀？

B resistance aganist 不是to; caused by 由......引起，比单纯表示原因的because of加名词结构好

D incidence 和 30- to 40-fold 不搭配。

那答案给的是B呀。。。B也不对 那个对呢？迷糊中~谢谢指点

increase in 是对的啊.