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     We all know that as the population of a city grows, so do its problems.
Pollution,  too  many cars, and crowded streets are just a  few of these
difficulties.  One way to help with these problems is city trains. Trains
traveling to different parts of a city means fewer cars and buses on our roads, cleaner air, and more open streets. In recent years, cities such as Guangzhou, Shenzhen and Shanghai have all built city train lines.
     The first city train line in China was built in Beijing. The oldest part of the train line, from Beijing Stop to Pingguoyuan, was opened in 1969.  Its length was 23.6 kilometres. As the city grew after 1980, so did the need for more
trains.A newer train line was built to help move people around the city centre. The 16-kilometre-long "circle line" was finished in 1987. Since that time
even more train stations have been built and today the train lines in the city
are over 50 kilometres long.
    For  the  coming beautiful  future,  the trains of Beijing will be very
important.  We all know that most of the people who go to work or go to
school will travel by train.  

1. Trains traveling to different parts of a city means____cars and buses on
our roads.

A. lots of          
B.little        
C.fewer        
D.less

2. The passage tells us about

A. the problems in big cities              
B.city trains
C. the history of Beijing                
D.2008 0lympic Games

3. How long was the first train line in Beijing?

A. About 16 kms.    
B.About 23 kms.    
C.About 33 kms.    
D.About 50 kms.

4. The 16-kilometre-long "circle line" was finished in____.

A. 1969          
B.1967            
C.1980            
D.1987

5.  Which of the followings is TRUE?

A. Bigger population, nlore problems.
B. The ldrger population a city has, the fewer problems it f'aces.
C. More ca.nd more cities are building undergrouml.s for the 2008 Olympic Games.
D. There are 20 stations on the "circle line" in Beijing.