Unit 4 Scientists who changed the world Grammar and usage & Integrated skills 一、汉译英 1.Local people are questioning the _____(明智) of spending so much money on a new road. 2.Statistics _____(表明) that depressed patients are more likely to become ill than normal people. 3.It is an effective treatment for the _____(细菌) and does kill them off. 4.She was involved in a serious car _____ (事故) last week. 5.It remains to be seen if the show will find _____(喜爱） with an audience. 二、选词填空 with a bang, show off, go off, make a difference, come up, due to 1.Changing schools could _____ to my life. 2.He arrived at the office late this morning _____ the heavy rain. 3.The thieves ran away hurriedly when the alarm _____. 4.The subject of exercise and nutrition _____ at last week's class meeting. 5.Henry hasn't missed a chance to _____ his muscles to others since being praised for his strong figure. 6.The team won their last four games, ending the season _____. 三、阅读理解 There's nothing magical about the number 10,000. In fact, the idea of walking at least 10,000 steps a day for health goes back many years to a marketing campaign started in Japan for the sale of pedometers(计步器).And, in the years that followed, it was accepted in the US as a goal to pursue good health. It's often the default setting (默认设置) on fitness trackers, but what's it really based on "The original basis of the number was not scientifically determined," says I-Min Lee, a researcher of Brigham and Women's Hospital. She was curious to know how many steps we need to take a day to maintain good health and live a long life, so she and her workmates designed a study that included about 17,000 elderly women. Their average age was 72. The women all agreed to wear devices to track their steps as they went about their day-to-day activities. It turns out that women who took about 4,000 steps per day got an increase in longevity (长寿), compared with women who took fewer steps. In fact, women who took 4,400 steps per day, on average, were about 40 percent less likely to die during the follow-up period of about four years compared with women who took 2,700 steps. The findings were published Wednesday in JAMA Internal Medicine. Another surprise: The benefits of walking maxed out at about 7,500 steps. In other words, women who walked more than 7,500 steps per day saw no additional increase in longevity. Janz, who helped shape the new national exercise recommendations, says the message that comes from this study is encouraging. "I think it's really good news for women who may not be particularly active," says Janz. "All they have to do is walk. To me, this study suggests there are more benefits of light exercise than we were previously thinking there might be." 1.How did the idea of walking at least 10,000 steps a day come into being A.It was made up by a group of elderly women. B.It was indeed the result of a scientific study. C.It actually came from a business advertisement. D.It ... ...
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