语法题

The spraying of pesticides can be carefully planned, but accidents, weather conditions that could not be foreseen, and pilot errors often cause much larger deposits of spray than they had anticipated.

(A) weather conditions that could not be foreseen, and pilot errors often cause much larger deposits of spray than they had

(B) weather conditions that cannot be foreseen, and pilot errors often cause much larger deposits of spray than

(C) unforeseeable weather conditions, and pilot errors are the cause of much larger deposits of spray than they had

(D) weather conditions that are not foreseeable, and pilot errors often cause much larger deposits of spray than

(E) unforeseeable weather conditions, and pilot errors often cause much larger deposits of spray than they had

这道题答案是B. Ｂ和Ｄ有什么区别吗？

can这个词还是很有作用的，不能随意去掉；

另外，foresee动词也优于foreseeable。