Experts say walking is one of the best ways for a person to remain healthy.

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问题 Experts say walking is one of the best ways for a person to remain healthy.

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

答案A

解析 stay含有“继续是,保持”之意,这里用作不及物动词,与本题划线词remain的意思相同。maintain“维持,继续,保持”,为及物动词;preserve“保留,维持”; reserve“保持,预定,储备”,为及物动词。
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