The hunter-gatherer tribes that today live as our prehistoric human __1__# x" A, R* _! C2 t0 u, T0 j; T+ `
ancestors consume primarily a vegetable diet supplementing with animal foods __2__
7 D+ M1 A) n4 D1 @7 a8 c0 J An analysis of 58 societies of modern hunter-gatherers, including the Kung of
9 Y5 h. H7 R8 J* e( m/ R; n southern Africa, revealed that one-half emphasize gathering plants foods,9 T+ B7 n# O) Z; N4 K y
one-third concentrate on fishing, and only one-sixth are primarily hunters,6 r) O$ U* h, G' h% O4 i' p8 K
Overall, two-thirds and more of the hunter-gatherer’s calories come from __3__, G, k4 F; ^0 S
plants. Detailed studies of the Kung by the food scientists at the University
2 w% t0 }" N% S& O of London, showed that gathering is a more productive source of food! q; P' ?" f6 \
than is hunting. An hour of hunting yields in average about 100 edible __4__8 |7 Y7 r( \9 ]* M3 h
calories, as an hour of gathering produces 240. __5__8 D- @( ^% h. X R2 Y* l
Plant foods provide for 60 percent to 80 percent of the Kung diet, and no __6__
: T3 l" B \1 L( m& s3 w one goes hungry when the hunt fails. Interestingly, if they escape fatal infections7 E# O- r/ N6 B+ | `) `8 o+ e
or accidents, these contemporary aborigines live to old ages despite of the absence __7__
1 d4 O. l6 D& X of medical care. They experience no obesity, no middle-aged spread, little$ _, |- Z* w( s# m
dental decay, no high blood pressure, no heart disease, and their blood' v( J1 b" }9 ?1 j. o$ d8 _
cholesterol levels are very low (about half of the average American adult). __8__# A- X' |9 A$ t3 p6 a
If no one is suggesting that we return to an aboriginal life style, we certainly __9__* N6 S& m: E9 M6 @2 a# ]
could use their eating habits as a model for healthier diet. __10__$ i ~* x! ]* [6 {
参考答案及解析:
- ~# R5 f% w' ^ 1. 将as 改为like( K; j' z/ q+ P# U) g" z5 z
此处的意思是“像史前人类祖先那样生活”。
* Y: b r$ z f) Y. a7 h 2. 将supplementing改为supplemented1 H0 S/ E& ?( |9 v0 z" K0 J
supplemented 修饰diet,可以看作which is supplemented with animal foods的简化形式。$ t; q: x% \7 Y. Y `7 [4 ?6 W
3. 将and 改为or2 |& S9 C+ d2 u7 X
4. 将in改为on
9 w+ q; Y. H h on average 是固定用法。
+ ~8 @6 x. O+ C. [ 5. 将as 改为while或者whereas% c0 h$ Z' n* ^2 \3 F
6. 删掉for,或者将provide改为account: o! N, x l+ @7 G' a1 }; H. e
此处provide 是及物动词,后面不用介词for- q/ {8 K X0 d6 I$ f0 ?1 Y
7. 删掉第一个of
8 [6 \- j: g) m9 ]. @1 A$ s despite 做介词,后面直接接名词。
$ q3 e% l4 W. Z. ]; E* [$ a 8. 在half后加that
9 G2 O ^4 v4 b 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。5 G. h/ O: T$ S& K ^# G
9.将if改为whereas或者while/ `! v( M' }5 V* l% f4 C2 u" u
此处意思为“尽管没有人……,但是……”,是转折关系。
8 |/ ^3 p7 ^" W/ a" V# h 10.在for后面加不定冠词a。 |