【題目】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

【答案】B

【解析】句意：今天，森林正在消失。我們必須防止人們砍伐過多的樹木。prevent sb. from doing sth.阻止某人做某事，故答案選B。

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