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题目内容
（黑龙江省教育学院口语(专升本)）
(单选题) Trees are useful to man mainly in three ways,the most important of which is that they can ( )(本题1.5分)
A、 keep him from the hot sunshine
B、 enable him to build warships
C、 make him draw quick profit from them
D、 protect him from droughts and floods
A、 keep him from the hot sunshine
B、 enable him to build warships
C、 make him draw quick profit from them
D、 protect him from droughts and floods
参考答案