The hunter-gatherer tribes that today live as our prehistoric human __1__+ u/ b3 ^4 [; [6 h- m$ g4 l ]
ancestors consume primarily a vegetable diet supplementing with animal foods __2__
- n% Y7 D% J- J An analysis of 58 societies of modern hunter-gatherers, including the Kung of
5 r( b# t# Z6 a4 {3 N southern Africa, revealed that one-half emphasize gathering plants foods,
9 e; C* r) @# y) A# ?% B# c. U# E7 e one-third concentrate on fishing, and only one-sixth are primarily hunters,
8 e3 D6 f9 [. ]4 T1 P, n4 t& @6 _ Overall, two-thirds and more of the hunter-gatherer’s calories come from __3__( a( J6 l' i k4 ]$ v9 F
plants. Detailed studies of the Kung by the food scientists at the University
( p5 @, W+ Q( G z: O# H Y of London, showed that gathering is a more productive source of food
! |# }4 Q; }8 b. o than is hunting. An hour of hunting yields in average about 100 edible __4__
) _9 t/ n2 l& ]$ s; a3 S/ K# R calories, as an hour of gathering produces 240. __5__$ B- L+ |6 M+ y( F$ b+ _
Plant foods provide for 60 percent to 80 percent of the Kung diet, and no __6__
7 ]% R) K- f6 k+ z) q one goes hungry when the hunt fails. Interestingly, if they escape fatal infections9 L7 G: e$ M/ }! ^2 Z: ~! i
or accidents, these contemporary aborigines live to old ages despite of the absence __7__
5 W3 `; Q/ r0 v; G8 D4 G! R- } of medical care. They experience no obesity, no middle-aged spread, little
) \7 K4 l) b4 y+ a1 N* { dental decay, no high blood pressure, no heart disease, and their blood
5 U6 n" o/ Z) }9 h% L0 j& P cholesterol levels are very low (about half of the average American adult). __8__
' L% ^8 V0 j4 V, v9 \0 m8 z: u# H8 O If no one is suggesting that we return to an aboriginal life style, we certainly __9__) j6 G2 x4 b$ r$ Q8 |4 ]6 [: G: O
could use their eating habits as a model for healthier diet. __10__9 X8 G" O) n2 ]+ }* Z, x# q
参考答案及解析:8 {7 O, ^! D) G% Y5 |# `1 b; H% p
1. 将as 改为like2 s# C+ U3 z) W& o7 W$ A
此处的意思是“像史前人类祖先那样生活”。) d6 E* V" E" w4 j5 r
2. 将supplementing改为supplemented
3 z+ I+ f) e/ Z5 T+ c supplemented 修饰diet,可以看作which is supplemented with animal foods的简化形式。& F1 B: M' Z' v. e) p
3. 将and 改为or
4 k/ |; e6 ^+ x5 D9 s& |) Z# ~ 4. 将in改为on& O. A6 r! L9 `2 R" z
on average 是固定用法。; ~7 w1 | H3 k0 x9 {- I* a
5. 将as 改为while或者whereas f9 u. {8 ~7 y; e. t2 W5 Q
6. 删掉for,或者将provide改为account
9 }* c' F* q/ r0 |) w1 o' R3 R9 X 此处provide 是及物动词,后面不用介词for
7 `/ |& A7 T: ` 7. 删掉第一个of. f u9 {7 l' H! n$ ^' W
despite 做介词,后面直接接名词。
. W( J9 n+ F( V/ h 8. 在half后加that; Z0 L8 }# f' q* L0 I/ |
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。
; W+ {9 n( \0 p 9.将if改为whereas或者while ?0 j0 ]2 X0 u _8 A: J/ t
此处意思为“尽管没有人……,但是……”,是转折关系。 m- u+ k7 m' o) Q# w
10.在for后面加不定冠词a。 |