It is generally believed that swimming is one of the best ways for a person to ______ good health.

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问题 It is generally believed that swimming is one of the best ways for a person to ______ good health.

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

答案D

解析 这四个动词都有保持的意思,但是用法不同。“保持健康”应该用maintain/keep health;preserve常指“保存,保护(视力,和平等)”;reserve指“保留,预定(座位,房间等):sustain指“承受,维持(失败,损失等)”。
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