Trees are useful to man mainly in three ways,the most important of which is that they

Trees are useful to man mainly in three ways,the most important of which is that they

题目
Trees are useful to man mainly in three ways,the most important of which is that they
接can protect ______ from droughts (干旱) and floods.
A.it B.itself C.himself D.him
答案为什么是D
答案
这里的him是指代man 人类
而不是指树木.句以理解为 树木最主要的用处在于它能保护人类免受干旱和洪灾.
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