D

   Microwaves may be great at warming up food, but what about warming people?

   Using microwaves to directly heat owners of a room would save much of the energy wasted by heating walls and furniture. And despite popular ideas about microwaves, this technique would be safe, according to Charles R. Burlier of the Microwave Research Center in Marlborough, New Hampshire. Low-power microwaves only penetrate (贯穿) the skin (low-power microwave penetration in a ham is about 0.2 inches, for example) and with no negative effects.

   To test this idea, Buffler subjected himself to microwaves in a special room using a standard 500-watt, 2459 MHz magnetron (磁控管). He found that a person will start to feel warmth at about 20 milliwatts per square centimeter (mw. / sq. cm. ) ; a satisfactory feeling of warmth occurs between 35 and 50mw. / sq. cm. By comparison, a person standing in noonday summer sun feels the amount of 85 mw. / sq. cm. And a frozen meat pie in your microwave oven receives about 1000 mw. / sq. cm.

   In houses of the future, each room could be provided with its own magnetron, says Buffler. When you stepped into the living room, for example, a motion detector (运动感应器)would turn on the magnetron, filling the room with low-power microwaves. In the same way that a microwave oven heats up a hamburger, but not the plate it’s on, you would feel warmth from the microwaves without changing the temperature of your coffee table. (You could, however, make your favorite easy chair even more comfortable by treating it with a radiation-absorbing chemical. )

   While it might be some time before homeowners are comfortable enough with the idea to set up whole-body microwave heaters in houses, Buffler says microwaves may attract livestock(家畜) farmers. Lambs that are born outdoors in winter, for example, are frequently lost to cold. Microwaves could warm the lambs safely and quickly.

51. Which of the following can tell the main idea of the passage?

   A. A new heating system.                 B. A new microwave oven.

   C. A popular technique.                  D. The magnetron.

52. According to paragraph 2, which of the following does not describe the characteristics of a microwave heater?

   A. It directly heats people in a room.         B. It heats walls and furniture in a room.

   C. It is safe.                           D. It saves energy.

53. The test conducted by Buffler shows that when a person feels comfortable warmth, he receives about______.

   A. 20 mw. / sq. cm.                      B. 40 mw. / sq. cm.  

C. 60 mw. / sq. cm.                      D. 85 mw. / sq. cm.

54. According to paragraph 4, which of the following fills the room with low-power microwaves?

   A. The magnetron.                       B. The motion detector.

   C. The microwave oven.                   D. The radiation-absorbing chemical.

55. Which of the following statements about microwave heaters would Buffler most probably agree with?

   A. Microwave heaters will soon be widely used by homeowners.

   B. Microwave heaters sometimes make people feel uncomfortable.

   C. Perhaps microwave heaters will be first used by livestock farmers, who wish to protect their lambs in winter.

D. Microwave heaters cannot be accepted by the public because they are somewhat unsafe.

第II卷(非选择题  共45分)

C

The way people hold to the belief that a fun-filled, pain free life equals happiness actually reduces their chances of ever attaining real happiness. If fun and pleasure are equal to happiness then pain must be equal to unhappiness. But in fact, the opposite is true: more often than not things that lead to happiness involve some pain.

 As a result, many people avoid the very attempts that are the source of true happiness. They fear the pain inevitably brought by such things as marriage, raising children, professional achievement, religious commitment (预担的义务), self - improvement.

 Ask a bachelor(单身汉) why he resists marriage even though he finds dating to be less and less satisfying. If he is honest he will tell you that he is afraid of making a commitment. For commitment is in fact quite painful. The single life is filled with fun, adventure, excitement. Marriage has such moments, but they are not its most distinguishing features.

 Couples with infant(幼儿)children are lucky to get a whole night’s sleep or a three-day vacation. I don’t know any parent who would choose the word fun to describe raising children. But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild.

 Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations. It liberates time: now we can devote more hours to activities that can genuinely(名副其实) increase our happiness. It liberates money: buying that new car or those fancy clothes that will do nothing to increase our happiness now seems pointless. And it liberates us from envy: we now understand that all those who are always having so much fun actually may not be happy at all.

 46.According to the author, a bachelor resists marriage chiefly because ________ .

   A. he is reluctant to take on family responsiblilities

   B. he believes that life will be more cheerful if he remains single

   C. he finds more fun in dating than in marriage

   D. he fears it will put an end to all his fun,adventure and excitement

 47.Raising children, in the author’s opinion, is ________ .

   A. a moral duty

    B. a thankless job

   C. a rewarding task

   D. a source of inevitable pain

 48.From the last paragraph, we learn that envy sometimes stems from ________ .

   A. hatred      B. misunderstanding

   C. prejudice      D. ignorance

 49.To understand what true happiness is,one must ________ .

   A. have as much fun as possible during one’s lifetime

   B. make every effort to liberate oneself from pain

   C. put up with pain under all circumstances

   D. be able to distinguish happiness from fun

 50.What is the author trying to tell us?

   A. Happiness often goes hand in hand with pain.

   B. One must know how to attain happiness.

   C. It is important to make commitments.

D. It is pain that leads to happiness.

B

The quality of drinking water in Shanghai will meet European Union standard by 2010 and, a decade later, citizens in Shanghai will drink the best water in the world.

These were the goals set out by the Shanghai Water Authority. With the city's population expected to increase only slightly and the economy to boom by 2020, Chen Yin, an official with the water authority, said Shanghai's water consumption will not increase from its present amount.

Zhang Yue, director of the Urban construction Division under the Ministry of Construction, said, “Shanghai is the first city in the country to publicize these ambitions. They will not be easy to achieve.”

He said water saving will help keep the sustainable development of China's economy.

Saving one cubic meter of water means saving the city's infrastructure(基础设施)costs by

10, 000 yuan. Last year, Shanghai saved 300 million cubic meters of water either from readjustment of industrial structure or the employment of new technology.

The aim is to arouse public awareness of the seriousness of water shortages,” Chen said.” The abundant surface water and amount of rain of the city are so misleading that they result in improper use of water.”

Shanghai lacks drinkable water. The Huangpu River, which supplies 80 percent of the city's drinkable water, is nearing exhaustion.

The city, therefore, has been exploring new sources from the Yangtze River and growing forests along it to conserve quality water.

Besides penning regulations, the authority is popularizing technology among the public to efficiently cut the amount of water used.

At present, the city has 600 000 family toilets, each using 13 liters of water per flush. These are to be renovated(整修)to use only 9 liters of water per flush.

The authority is renovating the first 200 toilets for households-at a cost of 40 yuan each.

In three years, all the toilets will be renovated, which saves the city nearly 15 million yuan every year in water conservation.

Another task the city is engaged in is the treatment of sewage(污水)to improve the water environment.

At present the city can only treat 44 percent of its daily 5.04 million tons of waste water. To meet the total demand, 27 more sewage treatment factories are to be established with an estimated investment of 18 billion yuan.

41. The people in Shanghai get their daily water mainly from     now.

A. underground  B. the Yellow River  C. the Yangtze River  D. the Huangpu River

42. The underlined words “the aim” here refer to    .

A. the quality of drinking water in Shanghai will meet European Union standard by 2010

B. citizens in Shanghai will drink the best water in the world by 2020

C. water saving will help keep the sustainable development of China's economy

D. saving one cubic meter of water means saving the city's infrastructure costs by 10 000 yuan

43. The authority is renovating the first 200 toilets for households to    .

A. make people's living more convenient   B. save drinkable fresh water

C. ease employment pressure            D. meet the total demand of water

44. The writer wrote the passage to    .

A. call on residents to save water in their daily life

B. seek(寻找)ways to solve water shortage existing in Shanghai

C. introduce Shanghai's advanced experience in improving the water environment

D. show that citizens in Shanghai will have the best drinking water in the world

45. In the opinion of Zhang Yue, the real meaning of the action to publicize these ambitions is to make people know    .

A. it is not easy to achieve

B. water shortage is very serious in China

C. the importance of improving infrastructure

D. economic development can't be separated with water supply

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