New ways have been found to prevent the river______.

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问题 New ways have been found to prevent the river______.

选项 A、not to be polluted
B、against polluting
C、from polluting
D、from being polluted

答案D

解析 prevent sth．from being…防止……被……。注意要用被动，因为“the rivet being polluted”。

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成人本科学位英语

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