Ⅳ. 完形填空。
从题中所给的A、B、C、D四个选项中选出能填入空白处的最佳选项。
When Chinese people meet someone who comes from London, they often ask, “London is a foggy city, isn't it?” But British people who visit China often say that London is not a foggy city at all! But if London is not foggy, 1 do so many people in China think it is? In fact, London 2 a foggy city since the 1950s.
In London, some of air pollution came partly from factories, but a lot of it mainly came from coal-burning, because people used coal in their houses 3 warm during winter. Air pollution also caused 4 problems and other diseases. In the 1950s, the government had to do something to clean the air. The government made a new rule. It didn't allow 5 to burn coal in any British city. Just a few years 6, the air became much cleaner.
Now many Chinese cities have the same 7 of air pollution. However, this problem is more difficult for Chinese cities to 8. There're several reasons. First, most of the pollution comes from big factories rather than from the coal people use in their houses. Second, clean fuels(燃料) are quite expensive. However, the air in many cities has 9 become cleaner, because the government and ordinary(普通的) people are trying to make pollution 10. As a result, the air in Beijing is getting cleaner and cleaner.
( )1. A. which
B. what
C. when
D. why
( )2. A. hasn't been
B. has been
C. was
D. wasn't
( )3. A. to keep
B. keeping
C. kept
D. keep
( )4. A. breathe
B. breath
C. to breathe
D. breathing
( )5. A. somebody
B. anybody
C. nobody
D. everybody
( )6. A. after
B. before
C. later
D. ago
( )7. A. problem
B. question
C. accident
D. advice
( )8. A. answer
B. find
C. solve
D. save
( )9. A. almost
B. already
C. hardly
D. nearly
( )10. A. much
B. less
C. little
D. more
