Fifty years ago, most people’s daily levels of activity were equivalent to w

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问题 Fifty years ago, most people’s daily levels of activity were equivalent to walking three to five miles a day. Today, the【C1】______person fails to 【C2】______ that distance in a week. It’s 【C3】______the ratio of fatness has soared—with serious implications for health.
What we have【C4】______ in convenience from labour-saving devices over the past half-century, we have paid for【C5】______ a sharp decline in physical activity. We use cars, buses or trains to【C6】______ work; our children are 【C7】______ to school; elevators and lifts have replaced【C8】______stairs in shopping centres, offices and apartment blocks. Washing machines, vacuum cleaners, dishwashers and electric mowers all reduce the effort required to【C9】______a clean and tidy home. Almost one third of adults 【C10】______ over ten hours sitting down every day,adding【C11】______a staggering average of 32 years and four months over a lifetime. 【C12】______ surprising, then, that researchers 【C13】______this lifestyle for our weight gain.
Of course, our diets have changed, too, 【C14】______the fact is that we consume fewer calories now than in the 1960s. So what is the 【C15】______? The secret is integrated exercise. This【C16】______going about your normal daily life—but doing it with enthusiasm. It might mean standing to【C17】______the phone and tapping your feet on the floor as you work. It means never taking the car when you could walk; it means standing on short train and bus【C18】______, or walking at a pace【C19】______you feel you might break into a run if you were to go any【C20】______. [br] 【C10】

选项 A、cost
B、pay
C、take
D、spend

答案 D

解析动词辨析题。pay和spend的主语虽然都是人，但用法不同。pay的句子结构为sb。pays…for sth．；spend的句子结构为sb．spends…(in)doing sth．，表示某人花费时间或金钱做某事，根据原文中旬子结构可知，[D]spend为正确答案。cost表示“花费”的意思时，主语是物；take主语应为it，句子结构通常为it takes sb．to do sth．，故排除[A]和[C]。

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