The vegetables with many chemicals are___human beings.
问题描述：
The vegetables with many chemicals are___human beings.
A.harm to
B.harmful to
C.harm for
D.harmful for
答
b
首先要排除a和c.因为空格里的应该是形容词而不是名词.而在b和d只见选择时,之所以选to是因为be harmful to是一种表达方式.如果用for的话,词组应为be harmful for somebody to do something