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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-25 16:40:08 发布人：wongrs | |
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and more of the hunter-gatherer’s calories come from plants. Detailed 3.___ studies of the Kung by the food scientists at the University of London, showed that gathering is a more productive source of food than is hunting. An hour of hunting yields in average about 100 4.___ edible calories, as an hour of gathering produces 240. 5.___ Plant foods provide for 60 percent to 80 percent of the Kung 6.___ diet, and no one goes hungry when the hunt fails. Interestingly, if they escape fatal infections or accidents, these contemporary aborigines live to old ages despite of the absence of medical care. 7.___ They experience no obesity, no middle-aged spread, little dental decay, no high blood pressure, on heart disease, and their blood cholesterol levels are very low( about half of the average American 8.___ adult), if no one is suggesting what we return to an aboriginal life 9.___ style, we certainly could use their eating habits as a model for 10.___ healthier diet. 阅读 A Part Ⅲ Reading Comprehension (40 min) SECTION A READING COMPREHENSION (30 min ) In this section there are four reading passages followed by a total of fifteen m ultiple-choice questions. Read the passages carefully and then mark your&nb
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