【答案】Many trees have gone, leaving only sand. People must ______ trees.

Many trees have gone, leaving only sand. People must ______ trees.

A. be stopped to cut down

B. be stopped from cutting down

C. stop from cutting down

D. stop to cut down

【答案】

C

【解析】

句意：许多树木都消失了，只留下了沙子。人们必须停止砍伐树木。考查语态和短语辨析。A. be stopped to cut down被停下来去砍伐；B. be stopped from cutting down被停止砍伐；C. stop from cutting down停止砍伐；D. stop to cut down停下来去砍伐。结合句意和语境可知选C。