The hunter-gatherer tribes that today live as our prehistoric human __1__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 Universityof London, showed that gathering is a more productive source of foodthan 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 infectionsor accidents, these contemporary aborigines live to old ages despite of the absence __7__of medical care. They experience no obesity, no middle-aged spread, littledental decay, no high blood pressure, no heart disease, and their bloodcholesterol 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__参考答案及解析:: K% K5 x4 [4 q# H' W, }
1. 将as 改为like此处的意思是“像史前人类祖先那样生活”。
5 b2 [" K# @3 h; }0 [) c2. 将supplementing改为supplementedsupplemented 修饰diet,可以看作which is supplemented with animal foods的简化形式。
# ~1 {3 q: I/ J: d3 b, q3. 将and 改为or4. 将in改为onon average 是固定用法。 \% ^: b( U) }8 z
5. 将as 改为while或者whereas6. 删掉for,或者将provide改为account此处provide 是及物动词,后面不用介词for7. 删掉第一个of despite 做介词,后面直接接名词。; N4 r \) n# k F) V6 ?8 q
8. 在half后加thatthat 指代前面的blood cholesterol levels,不能省略,因为这里是将部落成员的胆固醇含量与美国人的胆固醇含量相比较。
' E# ~' e: H) V2 [9.将if改为whereas或者while此处意思为“尽管没有人……,但是……”,是转折关系。: W$ V' B" ^8 W, I% [
10.在for后面加不定冠词a。 |