题目

阅读理解 Will doing housework save you a trip to the gym? If you think so, you need to think again. A new study finds that people who do housework as their weekly exercise tend to be heavier than those who get their exercise by doing sports. In fact, the more time people spend on performing housework as exercise, the heavier they tend to be. The finding is shocking, because people thought more physical activities — no matter what the form — would always lead to a lower weight. Richard Cotton, an exercise physiologist, agreed that it is hard to lose weight only by doing housework. You'll get the most reward for your time if you add some traditional physical activities, he said. For example, 30 minutes of sweeping floors bums about 130 calories, while 30 minutes of riding a bike bums 400 calories. But some housework does give you exercise. For example, 30 minutes of washing the clothes by hand bums 215 calories, close to what you would bum in 30 minutes of combined jogging and walking. The study collected information from more than 4,600 people who were interviewed about their weekly physical activity. About 42 percent of them had 150 minutes of physical activity per week. Of those people, nearly two-thirds said that at least 10 minutes of their weekly activity was spent doing housework. Women and older people tended to report more time spent in doing housework as part of their physical activity. In other words, if the researchers didn't count housework as a type of physical activity, just 20 percent of women had enough physical exercise. Therefore, it is possible that people who said they exercised by doing housework were not really honest about the time or length of the activity, researchers said. "After all, the combination of different physical activities is the best choice," Cotton said. （1） Why does the author raise a question at the beginning of the passage? A . To invite some readers to answer it. B . To draw readers' attention to the topic. C . To test readers' knowledge about sports. D . To show the importance of going to the gym. （2） Which of the following belongs to "traditional physical exercise"? A . Sweeping floors. B . Riding a bike. C . Washing the clothes. D . Cleaning the garage. （3） What can we learn about losing weight according to the passage? A . We should do various physical activities. B . We should exercise by doing housework. C . Jogging and walking are the best kinds of sports. D . The more housework we do, the heavier we'll be. 答案： B B A

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