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 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
【答案及講解】
1 將 as 改為 like
此處的意思是“像史前人類祖先那樣生活”。
2 將 supplementing 改為 supplemented
supplemented 修飾diet，可以看作which is supplemented with animal foods的簡化形式。
3 將 and 改為or
4 將 in 改為 on
on average 是固定用法。
5 將 as 改為 while 或者 whereas
6 刪掉for，或者將 provide 改為 account
此處provide 是及物動詞，後面不用介詞for
7 刪掉第一個of
despite 做介詞，後面直接接名詞。
8 在 half 後加 that
that 指代前面的blood cholesterol levels，不能省略，因為這裡是將部落成員的膽固醇含量與美國人的膽固醇含量相比較。
9 將 if 改為 whereas 或者 while
此處意思為“儘管沒有人……,但是……”，是轉折關係。
10 在 for 後面加不定冠詞 a
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