大学英语四级改错练习题及答案四

会计考友

Only a generation ago, Mauritania's capital city was
many day's walk from the Sahara. Today it is in the Sahara. 1.__________
6 Y9 F( F! V9 z/ I( t. XThe sand blows through the city streets and piles up in 2.__________
walls and fences. The desert stretches out as far as the
eye can see.

" [3 H$ u- G- bIn some parts of the Amazon rain forest in Brazil, all
the trees have cut down. The earth lies bare and dry in the 3.__________
5 y: q7 F" R' h" h/ a' U. q7 w6 jhot sun. Nothing grow there anymore. 4.__________
7 z; H; N9 s" K9 d
3 Y8 X2 g, W, K' Q# MOver vast areas of every continent, the rainfall and
" y8 t6 D4 N, J: S- nvegetation necessary for life is disappearing. Already 5.__________
more than 40 percent of the earth's land is desert and 6.__________
/ |9 ^; \  y. W  f, Odesert-like. About 628 million people--one out of seven--
# `/ o8 A2 x" x: [0 l7 Q0 m# U" ?" slive in these dry regions. In the past, they have managed to
survive, but in difficulty. Now, largely through problems 7.__________
caused by modern life, our existence is threatened by the 8.__________
4 @( s, X0 N+ U0 H- B7 p7 islow, steady spread of the earth's deserts.
0 S4 T2 J5 [' z3 c; d/ A+ U. o
Many countries first became concerned in 1970s after 9.__________
a terrible drought and famine destroyed Africa's Sahel,
the fragile desert along the south edge of the Sahara.
Thousands of people died even though there was a worldwide
effort to send food and medicine to the starved people. 10.__________
  y1 }' N5 t1 P# b7 ^
参考答案
. J# t  E) X8 k' q1. day's → days'
9 M) {/ t$ O  m' g2. in → against
3. have ∧ cut → been
$ H' F2 S% T& B7 j- J8 j- n4. grow → grows
; Q; N* a! M' g3 }0 Y( T2 Q5. is → are
$ |+ s. O5 [2 D" t2 d7 `! v/ Z1 K6. and → or
7. in → with
8. our → their
3 \) q6 Q) e9 R! D9. in ∧ 1970s → the
10. starved → starving