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] 【C3】

选项 A、no doubt
B、no wonder
C、no longer
D、no matter

答案 B

解析固定搭配题。句意为：所以肥胖率上升也就不足为奇了，但是这一问题却对健康造成了严重的影响。[B]no wonder表示“不足为奇”，由于前文谈到人们每天的运动量不如从前，这是致使人们肥胖率升高的原因，因此作者认为肥胖率升高也就不足为奇了。故选[B]。[A]no doubt表示“无疑地”；[C]nolonger表示“不再……”；[D]no matter表示“无论……”，均可以排除。

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