完形填空。
The earth is our home. We must take care of it. Life today is easier thanit was
1 years ago, but it has brought some new problems. One of the biggest problems
is pollution(污染). We can see it, smell it, drink it andeven 2 it. Man has polluted
the 3 . The more people, the more pollution.Many years ago, the problem was not so serious because there were not so 4people. When the land was used up (用光), the
river was not clean in a place,man went to 5 place. Now man is slowly polluting
the whole world.
6 pollution is still the most serious, it’s bad for 7 things in the world.Many
countries don’t let people burn 8 for air in houses and factories in the city. Pollution
by SO2 is now the most dangerous kind of 9 pollution. It’s caused by heavy traffic.
People say it’s 10 to ride bikes. When you are11, there is no pollution. But even in
developed countries, most people don’t go to work by bike. It’s not 12 bikes are expensive or people are tired if they ride to work. It’s because the number of cars on the roads becomes larger. So more people 13 their bikes and go to work by cars, then
things are getting 14 . We should have special roads only for bikes and make it 15
difficult and expensive for drivers to take their cars into the city that they will go back to use their bikes.
1. A. hundred B. hundreds of C. hundred of D. hundreds
2. A. listen B. listen to C. hear of D. hear
3. A. moon B. star C. earth D. sun
4. A. lot B. little C. many D. much
5. A. others B. the others C. the other D. another
6. A. Air B. Food C. Water D. Noise
7. A. life B. live C. living D. lives
8. A.something bad B. bad something
C. something good D. good something
9. A. water B. air C. noise D. white
10. A. least B. best C. most D. worst
11. A. driving B. biked C. riding D. ridden
12. A. why B. because C. what D. how
13. A. put on B. look at C. put away D. look up
14. A.better and better B. more and more
C. worse and worse D. bigger and bigger
15. A.quite B. such C. very D. so
1B 2D 3C 4C 5D 6A 7C 8A 9B 10B 11C 12B 13C 14C 15D
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