题目

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。     Recently researchers went through some survey information about the health and habits of men and women in Scotland,  (hope) to determine how much exercise is needed to keep the Scots  feeling depressed. The answer: a mere 20 minutes a week of any physical exercise, whether sports, walking, gardening  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  (be) enough, if your goal is mental health.     How much exercise is enough? This is a question difficult to answer,  (part) because the amount of exercise needed depends on the benefits you hope to gain. Twenty minutes a week of housecleaning or other  (activity) may, according to the Scottish study, increase your satisfaction, but it certainly won't do much for your physical fitness and is unlikely  (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  (estimate) that people who are physically active for about seven hours a week have a 40 percent  (low) risk of dying early than those  are active for less than 30 minutes a week.” 答案：【1】hoping【2】from【3】or【4】is【5】partly【6】activities【7】to reduce【8】is estimated/has been estimated【9】lower【10】who

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