10．The indoor air pollution is caused________.

　A. by the building method through which the builders want to save energy

　B. by the limit of the flow of air between inside and outside

　C. by the building things which are made of man - made materials

　D. not only by the limit of air - flow but also by the man made materials

9．Generally speaking, indoor air pollution may be more harmful than the air outside because ________.

　A. the man - made building materials let out dangerous gases inside houses

　B. there may be more harmful gases outside houses

　C. the flow of air indoors is limited

　D. indoor air pollution can make a person seriously ill

8．The flood is expected to________.

　A. go down　　　　　　B. cause more rain

C. get worse　　　　　 D. kill more people

C

　For years scientists have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.

　Indoor air pollution can cause a person to feel tired, to suffer eye-pain, headache and other problems. Some pollutants( 污染 物) can cause breathing disorders, diseases of blood and even cancer, Most scientists agree that every modern house has some kind of indoor pollution. People began to notice the problem in the early 1970s. It is that when builders began making houses and offices they did not waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also began using manmade building materials. These materials are now known to let out harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building- green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and through its tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square metres of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and more healthy place.

7．The people are staying ________.

　A. at a newspaper office　　　B. at a police station

　C. in Tulang　　　　　 D. on their roof tops

6．The flood victims(受害者)first escaped to ________.

　A. the nearby town　　　　B. Jalan Hisamuddin

　C. higher ground　　　　　D. Tulang

5．Motorists to the south were advised to ________.

　A. return home

　B. stay at home in Jalan Hisamuddin

　C. move to higher ground

　D. travel by Jalan Hisamuddin

4．The word“ plates” in this article might mean ________ in Chinese.

A. 盘子　　B. 钢板　　　C. 横木板　　 D. 铜牌

B

　Ternang, Mon, more than 10, 000 people were made homeless in Ternang after six days of continuous heavy rain. The wooden bridge across the river has been swept away, . The town is cut by flood waters. At the fifth mile Jalan Tengku, the water is not two metres deep. It is closed to all traffic. Motorists going south are advised to use Jalan Hisamuddin. Flooding first appeared at mid - afternoon yesterday along the river banks. People moving to higher ground were just in time to escape from the flood. Most of the people had to leave their possessions behind. Helped by the army, police, Red Cross Society, the whole town was moved out of danger. They are new houses near the town of Tulang. “Everything possible is being done to help the unfortunate people, ” a government official said, “ In fact, money, food and clothing have begun to come in from organizations and people. ”

　According to the latest reports it is still raining heavily at Ternang. The whole town is expected to be totally covered. So far nobody has been reported dead.

3．Rivets are described as being ________.

　A. picked up by tools when red -hot

　B. hit by tools when red - hot

　C. usually caught in a hole

　D. usually put in place when red - hot

2．In steel -frame building, the bottom walls________ .

　A. must be very thick

　B. must be rounded

　C. are usually red - hot

　D. do not need to be thick

1．The writer says that the Empire State Building ________.

　A. hasn’t been finished

　B. is in New York City

　C. is the tallest skyscraper in the world now

　D. had fewer floors than the New World Trade Center