题目内容

Today the forests are disappearing. We must _______ down too many trees.

A. prevent people to cut B. prevent people from cutting

C. prevent people for cutting D. prevent people at cutting

B 【解析】句意:今天,森林正在消失。我们必须防止人们砍伐过多的树木。prevent sb. from doing sth.阻止某人做某事,故答案选B。
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