2. 外语
  3. Fifty years ago, most people’s daily levels of activity were equivalent to walking three to five miles a day. Today, the(1)_____

Fifty years ago, most people’s daily levels of activity were equivalent to walking three to five miles a day. Today, the(1)_____

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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(1)______person fails to(2)______ that distance in a week. It’s(3)______ the ratio of fatness has soared—with serious implications for health.
    What we have(4)______ in convenience from labour-saving devices over the past half-century, we have paid for(5)______ a sharp decline in physical activity. We use cars, buses or trains to(6)______ work ; our children are(7)______ to school; elevators and lifts have replaced(8)______ stairs in shopping centres, offices and apartment blocks. Washing machines, vacuum cleaners, dishwashers and electric mowers all reduce the effort required to(9)______ a clean and tidy home. Almost one third of adults(10)______over ten hours sitting down every day, adding(11)______ a staggering average of 32 years and four months over a lifetime.(12)______ surprising, then, that researchers(13)______this lifestyle for our weight gain.
    Of course, our diets have changed, too ,(14)______the fact is we consume fewer calories now than in the 1960s. So what is the(15)______? The secret is integrated exercise. This(16)______ going about your normal daily life— but doing it with enthusiasm. It might mean standing to(17)______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 (18)______, or walking at a pace (19)______ you feel you might break into a run if you were to go any(20)______.
(14)
选项 A、and
B、so
C、but
D、as
答案C
解析 语篇衔接题。可以判断，两个分句之间的关系是转折关系，the fact是解题关键，其所引导的同位语从句与前面的分句是转折关系，故选[C]。
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