Water is an essential global resource and it is up to each of us to ______ it.

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问题 Water is an essential global resource and it is up to each of us to ______ it.

选项 A、preserve
B、maintain
C、reserve
D、conserve

答案D

解析动词辨析题。conserve意思是“保存；节约”，暗指谨慎或节省地使用以避免浪费，符合题意，D 为答案。preserve意思是“保护，保持，保存”，暗指使处于完善或不变的状况中，维持不变。maintain意思是“维持，维修，继续，供养，主张”。reserve意思是“储备，保存，预约”。

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专业英语四级

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