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

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

游客2023-11-04  8
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] 【C8】
选项 A、conservative
B、formal
C、conventional
D、usual
答案 C
解析 形容词辨析题。句意为:……购物中心、办公大楼和公寓里传统的楼梯都换成了扶梯和电梯。[C]conventional“传统的”，强调现代化的电梯与传统的楼梯形成鲜明的对比，故为答案。[A]conservative“保守的”、[B]formal“正式的”和[D]usual“通常的”均不能与stairs搭配，故排除。
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