2. 外语
  3. In Europe, there has been a serious decline in physical activity over the past 50 years. Adults aged 20-60 years(1)_____ 500kcal

In Europe, there has been a serious decline in physical activity over the past 50 years. Adults aged 20-60 years(1)_____ 500kcal

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问题     In Europe, there has been a serious decline in physical activity over the past 50 years. Adults aged 20-60 years(1)_____ 500kcal less energy per day than they did 50 years ago. This is the(2)_____ to the running of a marathon each week. Even(3)_____ of participation in walking and cycling are declining. All of which suggests we should be(4)_____ to the nearest gym. But the "green" policies of these establishments(5)_____ to be pretty disappointing: factor in air-conditioning, laundering of towels, energy-consuming exercise(6)_____ and the fact that 90% of exercisers(7)_____ to the gym.
    British Military Fitness, the UK’s leading (8)_____ fitness provider, offers a programme of nationwide classes in parks, and on common lands, in the(9)_____ of its Gym Intervention programme. The organisation advocates not just the fitness benefits of working out outside,(10)_____ our need to spend time in the great outdoors to(11)_____ overall mental and physical wellbeing.
    Group activity is declining as fast as our fitness rates, so the complete moral workout doesn’t merely(12)_____ the greenness of the equipment, but also the social capital to be(13)_____ by joining in.
    It also(14)_____ to start early. Children urgently need to become more(15)______, and yet according to Natural England, a public body that encourages people to enjoy their natural surroundings, the amount of time and(16)_____ children have with nature is declining; fewer than 10% now play in natural places(17)_____ woodlands, countryside and common land compared with 40% of children 40 years ago. Research shows that children who are(18)_____ to nature will continue to visit (19)_____ landscapes in adulthood and be committed(20)_____ retaining them.
(3)
选项 A、speed
B、rhythm
C、rates
D、ratio
答案C
解析 rates指部分相对整体形成的“比率”，ratesof participation即参加人数的比率，符合句意。ratio也是“比率”的意思，但表达的是两个数字间的比率，介词一般是用between。
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