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英语专业八级改错练习题

时间:2021-06-20 14:06:37 英语 我要投稿
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英语专业八级改错练习题汇总

  The hunter-gatherer tribes that today live as our prehistoric human __1__

英语专业八级改错练习题汇总

  ancestors consume primarily a vegetable diet supplementing with animal foods __2__

  An analysis of 58 societies of modern hunter-gatherers, including the Kung of

  southern Africa, revealed that one-half emphasize gathering plants foods,

  one-third concentrate on fishing, and only one-sixth are primarily hunters,

  Overall, two-thirds and more of the hunter-gatherer’s calories come from __3__

  plants. Detailed 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 edible __4__

  calories, as an hour of gathering produces 240. __5__

  Plant foods provide for 60 percent to 80 percent of the Kung diet, and no __6__

  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 __7__

  of medical care. They experience no obesity, no middle-aged spread, little

  dental decay, no high blood pressure, no heart disease, and their blood

  cholesterol levels are very low (about half of the average American adult). __8__

  If no one is suggesting that we return to an aboriginal life style, we certainly __9__

  could use their eating habits as a model for healthier diet. __10__