58．What is the topic discussed in the second paragraph?

　　　 A．Certain gases should be used to warm Mars. B．Plants should be grown to make Mars fit to live on.

　　　 C．Mars could support life on right conditions in the future.

　　　 D．People could live on Mars in special closed environments.

57．It is believed that on Mars now　　　 .

　　　 A．there is a large amount of ice at the poles.　 B．there is a thicker and warmer atmosphere

　　　 C．there are some kinds of simple plants　　 D．there are so many active volcanoes.

56．According to the passage, the planet Mars has no 　　on it.

　　　 A．wind　　　　　　　　　 B．dust　　　　　　　　　　 C．mountains　　　　　 D．animals

74．From the last three paragraphs we know the fact that　　　 .

　　　 A．lengthening the existing 53-kilometre subway is among the 50 large projects

　　　 B．a 40.5-kilometer line will be added to Beijing’s first light railway

　　　 C．the length of the subway will be up to 135.25-kilometres in 2005

　　　 D．a 70-metre-wide green belt will supply us with enough water

73．The underlined word“relocating”in this report means　　　 .

　　　 A．removing　　　　　　 B．pulling down　　　　 C．rebuilding　　　　　　 D．dealing with

72．The government will pipe natural gas to the city’s home in order to　　　 .

　　 A．solve the problem of being short of fuel　　　 B．bring down the cost of daily life

　　 C．reduce the pollution of our capital　 D．keep up with the development of modern society

71．According to Sarah, the fire department took so long to get to the school because　　　 .

　　　 A．it was a long way from the nearest town

　　　 B．the principal didn’t phone for the fire department immediately

　　　 C．there’s something wrong with the fire engine　　　　 D．in fact, it was not far from the town

E

　　　 Beijing-Beijing is to spend up to US $ 20 billion to change the Chinese capital into a 21st century one for the 2008 Olympics.

　　　 The government managed to host the 2008 games. The general aim is for Beijing to have the same environmental standards as Paris, London or Washington by 2008.

　　　 Hundreds of millions of dollars will be spent to pipe natural gas to the city’s home, taking away dirty coal burning gradually while 60, 000 buses will be changed to liquefied(液化)gas.

　　　 The money also will be used for relocating the polluting factories and building green belts. By 2008 around 90 percent of Beijing’s waste will be treated, compared to only 40 percent at present.

　　　 Olympic officials realize the city has a long way to go to match the environmental standards of such cities as Paris, Toronto, Istanbul and Osaka.

　　　 City officials have already announced that around 50 large projects are being dealt with to improve traffic congestion(拥挤)and cut down pollution. They include construction of Beijing’s first light railway, a 40.5-kilometer line which is expected to be complete in 2005.

　　　 Beijing, besides, plans to build an 82.25-kilometre – long subway to add to existing 53 kilometres. Nine major roads will be rebuilt or eidened.

　　　 Beijing also plans to build a 70–metre–wide green belt along the waterways to protect water quality as well as increase the green areas.

70．What does the word principal mean in Chinese in the first paragraph of the letter?

　　　 A．经理　　　　　　　　　 B．局长　　　　　　　　　 C．法官　　　　　　　　　 D．校长

69．Which of the following is true?

　　　 A．Sarah wrote home to ask for a million dollars.

　　　 B．Sarah said she had failed her exams, so the principal was angry with her.

　　　 C．Sarah told her parents about the fire to make them less angry at her real news.

　　　 D．The letter before the P. S. was completely true.