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,$ L; }) f$ O, U w; x2 c3 J9 y
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__
! |: T. {5 i/ u1 H4 A 答案:
+ N! }- P: H/ a' N+ x 1 将as 改为like。此处的意思是“像史前人类祖先那样生活”。& a/ A* W, \/ R5 ?
2 将supplementing改为supplemented。supplemented 修饰diet,可以看作which is supplemented with animal foods的简化形式。# U" @ A! y1 u( }
3 将and 改为or。
1 d# l9 `$ F. G6 [, W 4将in改为on。on average 是固定用法。% Z4 {& P% ^- Z
5 将as 改为while或者whereas' D5 M+ g4 ?) }. @# p, R
6删掉for,或者将provide改为account。此处provide 是及物动词,后面不用介词for
8 u0 M, H" J" H0 V5 _ 7 删掉第一个of。despite 做介词,后面直接接名词。
* f, e" G' w; f; @# J 8 在half后加that。that 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。
9 w6 M2 ? P9 \5 P9 D 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。; e% u9 A {5 `, V* h2 y2 X
10在for后面加不定冠词a。 |