16.What is the main idea of the last paragraph ?

     A.It shows the reason why people think some colors are warm and others are cool .

     B.Warm colors remind people of warm days .

     C.Cool colors remind people of cool days .

     D.People have an agreeable opinion of warm colors and cool colors .

E

Disposing(处理)of waste has been a problem since humans started producing it . As more and more people choose to live close together in cities , the waste-disposal problem becomes increasingly difficult .

During the eighteenth century, it was usual for several neighboring towns to get together to select a faraway spot as a dump site . Residents or trash haulers(垃圾拖运者)would transport household rubbish , rotted wood , and old possessions to the site . Periodically(定期的)some of the trash was burned and the rest was buried . The unpleasant sights and smells caused no problem because nobody lived close by .

Factories , mills , and other industrial sites also had waste to be disposed of . Those located on rivers often just dumped the unwanted remains into the water . Others built huge burners with chimneys to deal with the problem .

Several facts make these choices unacceptable to modern society . The first problem is space  Dumps , which are now called landfills , are most needed in heavily populated areas . Such areas rarely have empty land suitable for this purpose . Property is either too expensive or too close to residential(住宅区的)neighborhoods . Long-distance trash hauling has been a common practice  but once farm areas are refusing to accept rubbish from elsewhere ,cheap land within trucking distance of major city areas is almost nonexistent .

Awareness(意识)of pollution dangers has resulted in more strict rules of waste disposal. Pollution of rivers , ground water ,land and air is a price people can no longer pay to get rid of waste . The amount of waste ,however , continues to grow .

Recycling efforts have become commonplace , and many towns require their people to take part . Even he most efficient recycling programs ,however , can hope to deal with only about 50 percent of a city’s reusable waste .

12.On the whole ,we can conclude       .

     A.people in Beijing prefer modern culture to something traditional

     B.there are usually more cultural activities in September than in any other month

     C.most of the cultural activities in Beijing are for foreign visitors only

     D.we can enjoy a large variety of cultural activities in Beijing

D

In general , people talk about two groups of colors : warm colors and cool colors . Researchers in psychology think that there are also two groups of people : people who prefer warm colors and people who prefer cool colors .

The warm colors are red , orange and yellow . Where there are warm colors and a lot of light , people usually want to be active . People think that red , for example , is exciting. Sociable people , those who like to be with others , like red . The cool colors are green , blue and violet . These colors , unlike warm colors are relaxing . Where there are cool colors , people are usually quiet . People who like to spend time alone often prefer blue .

Red may be exciting , but one researcher says that time seems to pass more slowly in a room with warm colors than in a room with cool colors . He suggests that a warm color , such as red or orange is a good color for a living room or restaurant . People who are relaxing or eating do not want time to pass quickly . Cool colors are better for offices or factories if the people who are working there want time to pass quickly .

Researchers do not know why people think some colors are warm and other colors are cool . However , almost everyone agrees that red , orange , and yellow are warm and that green , blue , and violet are cool . Perhaps warm colors remind people of warm days and the cool colors remind them of cool days . Because in the north the sun is higher during summer , the hot summer sunlight appears yellow .

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