Experts say walking is one of the best ways for a person to healthy.
A. preserve
B. stay
C. maintain
D. reserve
网友回答
A. preserve
(答案→)B. stay
C. maintain
D. reserve
解析： 本题译文：专家们说，步行是一个人保持健康的最好方法之一。preserve, stay, maintain, reserve这4个词均有“保持”，“维持”之意。stay后可接形容词作表语：The weather stayed wet for three days.其他3个词均为及物动词。Preserve(=keep safe from decay, risk, harm, danger, going bad etc.)保存，保护：1)Policemen preserve order in the streets.(警察在街上维持秩序。) 2)We must preserve our natural resources.(我们必须保护自然资源。)3)You paint woodwork to preserve it.(你油漆木制品以防腐烂。)Maintain(=keep up)保持，维持，维修。Reserve(=keep for a special purpose; store)保留，预定：1)I'll reserve my opinion at his time,(这时我将保留我的看法。) 2)I'll phone up today and reserve a room.(我今天将打电话预定一个房间。)