Only a generation ago, Mauritania's capital city was! e& ]& b/ ~1 D
many day's walk from the Sahara. Today it is in the Sahara. 1.__________" ^& ?& K$ l* ]8 J6 [( H, o( L" v
The sand blows through the city streets and piles up in 2.__________! m5 Z) W5 u5 u8 g K# X
walls and fences. The desert stretches out as far as the% Z1 _1 i4 E0 Q3 e7 X0 y5 L1 h
eye can see.* d) _. W2 ?4 w# c1 e
In some parts of the Amazon rain forest in brazil, all+ m' u( n/ t* v- E
the trees have cut down. The earth lies bare and dry in the 3.__________ B7 ]5 ^0 Y* D5 ?6 j4 i* k" \
hot sun. Nothing grow there anymore. 4.__________
& b$ d( w1 N2 X( G& o Over vast areas of every continent, the rainfall and
& H7 t9 U8 _/ T$ c vegetation necessary for life is disappearing. Already 5.__________
* B( }8 Z8 n; p8 B4 \* u' f# n more than 40 percent of the earth's land is desert and 6.__________# e1 e# i7 }3 w8 t
desert-like. About 628 million people--one out of seven--
/ M( }# W/ W5 s live in these dry regions. In the past, they have managed to% r0 ]' C9 h8 P: p J
survive, but in difficulty. Now, largely through problems 7.__________
4 c, v X* f% y, J! B# H9 D: G5 g caused by modern life, our existence is threatened by the 8.__________4 ]5 H0 \. \# z* D; t4 t
slow, steady spread of the earth's deserts.
# I F7 I: A2 R, o( K Many countries first became concerned in 1970s after 9.__________
|5 j, x" C2 L E a terrible drought and famine destroyed Africa's Sahel,
6 H$ D9 v" S$ K" A" V3 r the fragile desert along the south edge of the Sahara.& A& C+ S3 p) ?5 e
Thousands of people died even though there was a worldwide
2 J) Z* E4 {- v" C/ o2 {6 S effort to send food and medicine to the starved people. 10.__________
. y3 j7 N; G9 L1 Q# r# d& a 参考答案- b9 b+ t6 x. T
1. day's → days'
! @# P; j0 V+ m6 m& }% ` 2. in → against
$ R; G! K5 B$ a* T, R* j/ u$ | 3. have ∧ cut → been. z2 \/ B1 I5 q( i/ {3 [' `
4. grow → grows& z. V0 J V4 Z7 t+ _1 B
5. is → are
: Q; ?3 T3 C0 ?. V1 r4 V% g) O: Q 6. and → or7 E& B3 r6 [* M9 |
7. in → with: X# C/ l: g6 l7 u) U! B2 t
8. our → their2 Z' _8 |3 A3 ?
9. in ∧ 1970s → the |
发表于 2012-8-14 09:52:33
