ThispassageisA．abriefintroduct-优题课

　　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.
　　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

　　The most effective way to clean the air is to use different kinds of plants because________.

A．they may let out more oxygen which people need

B．they can absorb different kinds of the harmful indoor chemicals

C．they can take in all kinds of indoor pollutants

D．they can make your house prettier and more healthy

　For almost forty years the Empire State Building in New York City was the world's tallest skyscraper（摩天大楼）. The building reaches a height of 1, 250 feet. It has 102 floors. The use of steel frames made its height possible. Steel walls can rise height without needing to be thick. Steel frame construction is strong. All plates are fixed firmly together by metal bolts（螺栓）called rivets （铆钉）. When set in place, rivets are usuall red- hot. One end is already rounded. A riveter uses a special hammer to shape the other end. Then the rivet cools. It holds the plates firmly. High winds can move this strong building. A wind of a hundred miles an hour has caused it to move almost one and a half inches.
　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

　　　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

　　　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

　　In 1826, a Frenchman named Niepce needed pictures for his business. But he was not a good artist. So he invented a very simple cameras. He put it in a window of his house and took a picture of his yard. That was the first photograph.
　　The next important date in the history! of photography was 1837. That year, Daguerre, another French, took a picture of his studio. He used a new kind of camera and a different process. In his pictures, you could see everything very clearly, even the smallest details. This kind of photograph was called a daguerreotype.
　　Soon, other people began to use Daguerre's process. Travelers brought back daguerreotypes from all around the world. People photographed famous buildings, cities and mountains.
　　In about 1840, the process was improved. Then photographers could take pictures of people and moving things. The process was not simple. The photographers had to cary lots of films and processing equipment. But this did not stop the photographers, especially in the United States. After 1840s daguerreotype artists were popular in most cities.
　　Mathew Brady was a well - known American photographer. He took many pictures of famous people. The pictures were unusual because they were very life - like and full of personality （个性）.
　　Brady was also the first preson to take pictures of war. His 1862 Civil War pictures showed dead soldiers and ruined cities. They made the war seem more real and more terrible.
　　In the 1880s, new inventions began to change photography... Photographers could buy films readymade in rolls（卷）. So they did not have to make the film themselves. Also, they did not have to process the film immediately. They could bring it back to their studios and develop it later meaning that they did not have to carry lots of equipment. And finally, the invention of the small handheld camera made photography less expensive.
　　With the small camera, anyone could be a photographer. People began to use cameras just for fun. They took pictures of their families, friends and favorite places. They called these pictures" snapshot".
　　Photographs became very popular in newspapers in the 1890s. Soon magazines and books also used documentary photographs. These pictures showed true events and people. They were much more real than drawing.
　　Photography also turned into a form of art by the end of the 10th century. Some photographs were not just copies of the real world. They showed ideas and feelings, like other art forms.
　　The passage is mainly about ________.

A．the inventoin of cameras

B．a kind of new art - photography

C．the development of photography

D．the important dates in the history of photography

　　　The first pictures of a war were taken by________.

A．a French photographer in the 1840s

B．an American photographer in the 1860s

C．a German reporter in the 1880s

D．a French artist in the 1890s

　　Photography can also be an art form because artists can ________.

A．take anything they like

B．keep a record of real life

C．take photos of the famous

D．show ideas and feeling in pictures

　　ARIEL, West Bank: A suicide bomber blew up near Israeli soldiers outside a Jewish settlement in the West Bank yesterday, killing at least three people and wounding about 30 others, the settlement's mayor and rescue workers said.
　　"A suicide bomber came and there were many soldiers...and he blew himself up." said Ron Nachman, mayor of the settlement of Ariel. "Soldiers were among the casualties. "People on the spot said the bomber blew up after soldiers eating at a food stand in a petrol station at the entrance of the settlement found him. According to some people on the spot accounts reported by Israeli media, a soldier shot and wounded the bomber, who then exploded.
　　The Magen David Adorn ambulance service said at least three people were killed and at least 30 wounded in the blast, which set the bomber burning at Ariel, about 25 kilometers east of Tel Avi v.
　　A fire brigade official said: "The bomber was still burning when we got there and we put out the fire immediatelly."
　　Meanwhile, a blast shook homes in Lebanon's largest Palestinian refugee camp early yesterday, damaging buildings but causing no injuries, Palestinian sources said. They said the bomb was planted outside the home of a member of Palestimian President Yasser Arafat's Fatah faction in Ain el-Hilwch camp, and exploded while the family was sleeping.
　　Some of people including ________were killed or wounded in the blast accident.

A．soldiers	B．mayor
C．rescue workers	D．a fire brigade official

　　　The suicide bomber blew himself up because________.

A．there was something wrong with his brains

B．a soldier shot and wounded him

C．he couldn't see the settlement's mayor

D．he wanted to make himself known

　　What does the underlined word "casuahies" probably mean in the second paragraph?________

A．sufferers

B．killers

C．passersby

D．losers

　　It can be concluded that the passage is most probably part of a （n）________.

A．announcement	B．advertisement
C．news report	D．science research

Some people believe that international sport brings about good will between the nations and that ff countries play games together they will learn to live together. Others say that the opposite is true: that international contests encourage false national pride and lead to misunderstanding and hatred. There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sport encourages international brotherhood. Not only was there the terrible incident with the murder of athlets, but the Games were also ruined by those incidents caused mainly by minor national contests.
　　One country received its second - place medal with great anger after the hockey final. There had been noisy scenes at the end of the hockey match, the losers objecting to the final decisions. They were certain that one of their goals should not have been dismissed and that the opposite side's victory was unfair. Their manager was angry when he said: "This wasn't hockey. Hockey and the International Hockey Society are finished. "The president of the society said later that such words could result in the pause of the team for at least three years.
　　The American basketball team announced that they would not give away first place to Russia, after a fighting end to their contest. The game had ended in quarrel. It was thought at first that the United States had won, by a single point, but it was announced that there were three seconds still to play, A Russian player then threw the ball from one end of the court to the other, and another player beat it into the basket. It was the first time the USA had ever lost an Olympic basketball match. The judges discussed the matter for four and a half hours before announcing that the result would stand. The American players then decided not to receive the silver medals.
　　Incidents of this kind will continue as long as sport is played for honors or money rather than for the love of the game. The suggestion that sportsmen should compete as individuals , or in non national teams, might be too much to hope for. But in the present organization of the Olympics there is far too much that encourages dangerous nationalism.
　　According to the author, recent Olympic Games have ________.

A．brought about goodwill between the nations

B．made only false national pride

C．hardly showed any international friendship

D．led to more and more misunderstanding and hatred

　　What did the manager mean by saying, "... Hockey and the International Hockey Society are finished"? ________.

A．His team would no longer take part in international games

B．Hockey and the society are both ruined by the unfair decisions

C．There should be no more hockey matches organized by the society

D．The society should be dismissed

　　What conclusion can be drawn from the passage? ________.

A．The organization of the Olympic Games must be improved

B．Athletes should compete as individuals in the Olympic Games

C．Sport should be played competitively rather than for the love of the game

D．International contests lead to misunderstanding between nations.

A．in a newspaper	B．in a magazine
C．on the Internet	D．in a report