题型:语法填空(语篇) 题类:模拟题 难易度:困难
Recently researchers went through some survey information about the health and habits of men and women in Scotland, 1 (hope) to determine how much exercise is needed to keep the Scots 2 feeling depressed. The answer: a mere 20 minutes a week of any physical exercise, whether sports, walking, gardening 3 even housecleaning. The researchers found that more exercise brought more mental-health benefits. But their overall conclusion was that being active for 20 minutes a week 4 (be) enough, if your goal is mental health.
How much exercise is enough? This is a question difficult to answer, 5 (part) because the amount of exercise needed depends on the benefits you hope to gain. Twenty minutes a week of housecleaning or other 6 (activity) may, according to the Scottish study, increase your satisfaction, but it certainly won't do much for your physical fitness and is unlikely 7 (reduce) your risks for diseases. It also won't help much with weight loss.
Interestingly, they did not find that exercise beyond a certain point would bring additional health benefits. According to the report, “It 8 (estimate) that people who are physically active for about seven hours a week have a 40 percent 9 (low) risk of dying early than those 10 are active for less than 30 minutes a week.”
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