阅读下面短文， 从各题所给的四个选项中选出最佳答案。
Ben and his classmates are watching a DVD about the environment. A long time ago, most towns and
villages were very small. The number of people
1 lived in every country was much smaller than it is today,
too. There was
2 heavy industry. People did not use chemicals. There were no motor vehicles and there
were no factories. So there was very
3 pollution.
Sadly, our environment is much dirtier than
4 was in the past. This is a
5 because the best way for us
to be healthy is to live in a clean environment.
The air and water are much dirtier than they
6 be. The chemical factories and cars
7 terrible gas. The
water
8 with chemicals from the factories and ships. This means we are destroying our home little by little.
In the DVD we will try to find ways to
9 our environment cleaner and find ways to stop future pollution. We
hope you will learn
10 you can help make the world a cleaner and healthier place.
( ) 1. A. who
( ) 2. A. not
( ) 3. A. much
( ) 4. A. he
( ) 5. A. question
( ) 6. A. used to
( ) 7. A. clone
( ) 8. A. pollutes
( ) 9. A. consider
( ) 10. A. because |
B. which
B. no
B. many
B. she
B. bridge
B. are used to
B. afford
B. polluted
B. give
B. how |
C. whose
C. few
C. a little
C. one
C. problem
C. were used to
C. take
C. is polluted
C. make
C. what |
D. whom
D. a few
D. little
D. it
D. difficulty
D. was used to
D. produce
D. has polluted
D. develop
D. why |