The hunter-gatherer tribes that today live as our prehistoric human __1__
1 ?7 q! f) a' ? ancestors consume primarily a vegetable diet supplementing with animal foods __2__# L, d g7 J# C; f B6 K8 y
An analysis of 58 societies of modern hunter-gatherers, including the Kung of" k; T- B4 b. f% a5 a; o% g5 O! G
southern Africa, revealed that one-half emphasize gathering plants foods,( p( w, J0 `2 J
one-third concentrate on fishing, and only one-sixth are primarily hunters,$ M( C# o- R9 Y; ^9 F& `
Overall, two-thirds and more of the hunter-gatherer’s calories come from __3__: y5 L: `: T% G& b
plants. Detailed studies of the Kung by the food scientists at the University( f( b. Q8 h! t; x% q, f( v L% H8 ~
of London, showed that gathering is a more productive source of food) s/ _: w9 S: S2 V' b$ C
than is hunting. An hour of hunting yields in average about 100 edible __4__
! c" @3 W7 b. \7 Y! r4 w calories, as an hour of gathering produces 240. __5__
* Q8 t7 m6 G: w8 `2 B# c8 N Plant foods provide for 60 percent to 80 percent of the Kung diet, and no __6__
+ Z2 y# s/ F( O' X/ D5 V, a2 ~ one goes hungry when the hunt fails. Interestingly, if they escape fatal infections o5 R0 A& U$ j
or accidents, these contemporary aborigines live to old ages despite of the absence __7__- g5 G* u! ]6 m b: l- Q8 u
of medical care. They experience no obesity, no middle-aged spread, little
5 _4 |. S" g) V" j2 I$ D2 k2 B1 Y: s: o dental decay, no high blood pressure, no heart disease, and their blood
; {& y& ?1 r6 ^* R# h' S2 [ cholesterol levels are very low (about half of the average American adult). __8__0 n% A: C/ f& `0 n! d8 v
If no one is suggesting that we return to an aboriginal life style, we certainly __9__' @: Z" A P4 H6 i
could use their eating habits as a model for healthier diet. __10__5 g; T6 L" J9 P' n* ]* F1 y
参考答案及解析:
* U( ]* Z2 S, _* X# b8 ^ 1. 将as 改为like1 E7 m6 F% d3 s% O
此处的意思是“像史前人类祖先那样生活”。. S: F- N. `) p* D# b
2. 将supplementing改为supplemented; w( d/ [4 k' b$ d+ Y: Q5 k+ `6 _0 M" S/ k
supplemented 修饰diet,可以看作which is supplemented with animal foods的简化形式。2 D7 t* Y9 ^, i. _
3. 将and 改为or9 S$ \, n% T J3 ~3 Z
4. 将in改为on
+ K2 i" Y# g/ v+ T- ~+ S on average 是固定用法。) _+ T4 d+ Y. D* K' Y! f
5. 将as 改为while或者whereas$ |; I5 T' t; \ J( M
6. 删掉for,或者将provide改为account+ r+ m2 T8 w7 R @
此处provide 是及物动词,后面不用介词for
2 E7 t) b6 Q1 w Z! g 7. 删掉第一个of
A* y5 u. K0 `0 X# C& ` despite 做介词,后面直接接名词。* O U3 m4 A" K/ X: J N' o4 B
8. 在half后加that
2 v0 I8 J& T' F- C 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。! `% r* e" \. a; M% g6 d
9.将if改为whereas或者while
$ B9 p# ?, r$ U$ h 此处意思为“尽管没有人……,但是……”,是转折关系。6 T+ G) X; S( r( u$ z) l# R. `. ?
10.在for后面加不定冠词a。 |