I paid 30 yuan for a watermelon the other day. When I ate it at home I found it more bitter than sweet. I was 36   to throw it away for it cost me money 37  . But to eat it was a 38  thing no better than tasting goldthread(黄连)
Things like this  39  occur in our daily life. For example, last week when going on a tour we failed to find the  40  we had been seeking.  41  we were so uncomfortable as if on pins and needles(如坐针毡).In such a case we had better  42  home immediately, but most of us tourists still chose to  43  our way until we finished visiting all the scenic spots,  44  actually we did not quite enjoy them.
If we   45   , we’ll get nothing; we would have spent money  46  .If we don’t give up, what we’ve got is something to cause suffering or pain, or    47  disaster. Since that’s the case, why are we still unwilling to  48 with it? The only 49 _ is: it means money.
Then what 50 __does money contain? Its importance lies in none 51 __the following two aspects: (1) it can be used for our living;(2) it can be used for daily life. When a sum of money that should be able to obtain joy or enjoyment is certain to 52 the purpose, isn’t it wise to give it up? Isn’t it a sort of 53 for money-spending or even for enjoying ourselves?
To abandon and forget a sum of money that is to be of no value or to produce   54  values can be counted as   55 value of money. Isn’t it so?

Fish Ears Tell Fish Tales

　 Fish have ears. Really. They’re quite small and have no opening to the outside world carrying sound through the body. For the past seven years, Simon Thorrold, a university professor, has been examining fish ears, small round ear bones called otoliths (耳石).

　 As fish grow, so do their otoliths. Each day, their otoliths gain a ring of calcium carbonate (碳酸钙). By looking through a microscope and counting these rings, Thorrold can determine the exact age of a young fish. As a fish gets older, its otoliths no longer get daily rings. Instead, they get yearly rings, which can also be counted, giving information about the fish’s age, just like the growth rings of a tree.

　 Ring counting is nothing new to fish scientists. But Thorrold has turned to a new direction. They’re examining the chemical elements (元素) of each otolith ring.

　 The daily ring gives us the time, but chemistry tells us about the environment in which the fish swam on any given day. These elements tell us about the chemistry of the water that the fish was in. It also says something about water temperature, which determines how much of these elements will gather within each otolith ring.

　 Thorrold can tell, for example, if a fish spent time in the open ocean before entering the less salty water of coastal areas. He can basically tell where fish are spending their time at any given stage of history.

　 In the case of the Atlantic croaker, a popular saltwater food fish, Thorrold and his assistant have successfully followed the travelling of young fish from mid-ocean to the coast, a journey of many hundreds of miles.

　 This is important to managers in the fish industry, who know nearly nothing about the whereabouts of the young fish for most food fish in the ocean. Eager to learn about his technology, fish scientists are now lending Thorrold their ears.

1.What can we learn about fish ears from the text?

　A. They are small soft rings.

　B. They are not seen from the outside.

　C. They are openings only on food fish.

　D. They are not used to receive sound.

2.Why does the writer compare the fish to trees?

　A. Trees gain a growth ring each day.

　B. Trees also have otoliths.

　C. Their growth rings are very small.

　D. They both have growth rings.

3.Why is it important to study the chemistry of otolith rings?

　A. The elements of the otoliths can tell the history of the sea.

　B. Chemical contents of otoliths can tell how fast fish can swim.

　C. We can know more about fish and their living environment.

　D. Scientists can know exactly how old a fish is.

4.How would you understand “fish scientists are now lending their ears”?

　A. They are very interested in Thorrold’s research findings.

　B. They want to know where they can find fish.

　C. They lend their fish for chemical studies.

　D. They wonder if Thorrold can find growth rings from their ears.　

Nowadays people are troubled by the violence that spreads throughout the media. Movies, television and video games are full of gunplay and bloodshed, and one might reasonably ask what’s wrong with a society that presents videos of violence as entertainment.
Viewing large amounts of violent television and video games may well contribute to violent behavior in certain individuals. The trouble comes when researchers downplay uncertainties in their studies or overstate the case for causality（因果关系）. Skeptics were dismayed several years ago when a group of societies including the American Medical Association tried to end the debate by issuing a joint statement: “At this time, well over 1,000 studies… point to a causal connection between media violence and aggressive behavior in some children.”
Freedom-of-speech advocates accused the societies of catering to politicians, and even disputed the number of studies (most were review articles and essays, they said). When Jonathan Freedman, a social psychologist at the University of Toronto, reviewed the literature, he found only 200 or so studies of television-watching and aggression. And when he weeded out “the most doubtful measures of aggression”, only 28% supported a connection.
The critical point here is causality. The alarmists say they have proved that violent media cause aggression. But the assumptions behind their observations need to be examined. When labeling games as violent or non-violent, should a hero eating a ghost really be counted as a violent event? And when experimenters record the time it takes game players to read “aggressive” or “non-aggressive” words from a list, can we be sure what they are actually measuring? The intention of the new Harvard Center on Media and Child Health to collect and standardize studies of media violence in order to compare their methodologies, assumptions and conclusions is an important step in the right direction.
Another appropriate step would be to tone down the criticism until we know more. Several researchers write, speak and testify quite a lot on the threat posed by violence in the media. That is, of course, their privilege. But when doing so, they often come out with statements that the matter has now been settled, drawing criticism from colleagues. In response, the alarmists accuse critics and news reporters of being deceived by the entertainment industry. Such clashes help neither science nor society.
【小题1】Why is there so much violence shown in movies, TV and video games?

Until the 1980s, the American homeless population comprised mainly older males. Today, homelessness strikes much younger part of society. In fact, a 25-city survey by the U. S. Conference of Mayors in 1987 found that families with children make up the fastest growing part of the homeless population. Many homeless children gather in inner cities; this transient and frequently frightened student population creates additional problems — both legal and educational — for already overburdened urban school administrators and teachers.

Estimates of the number of homeless Americans range from 350,000 to three million. Likewise, estimates of the number of homeless school children vary radically. A U.S. Department of Education report, based on state estimates, states that there are 220,000 homeless school-age children, about a third of whom do not attend school on a regular basis, But the National Coalition for the Homeless estimates that there are at least two times as many homeless children, and that less than half of them attend school regularly.

One part of the homeless population that is particularly difficult to count consists of the “throwaway” youths who have been cast of their homes. The Elementary School Center in New York City estimates that there are 1.5 million of them, many of whom are not counted as children because they do not stay in family shelters and tend to live by themselves on the streets.

Federal law, the Stewart B. McKinney Homeless Assistance Act of 1987, includes a section that addresses the educational needs of homeless children. The educational provisions of the McKinney Act are based on the belief that all homeless children have the right to a free, appropriate education.

1.It is implied in the first paragraph that ____.

A. there is a serious shortage of academic facilities.

B. homeless children are denied the opportunity of receiving free education.

C. the writer himself is homeless, even in his eighties.

D. many older homeless residents are going on strike in 25 cities.

2.The National Coalition for the homeless believes that the number of homeless children is _____.

A. 440,000    B. 110,000   C. 350,000　D. 1,500,000

3.One part of the homeless population is difficult to estimate. The reason might well be ____.

A. the homeless children usually stay outside school.

B. some homeless children are deserted by their families.

C. the homeless children are too young to be counted as children.

D. the homeless population is growing rapidly.

4.The McKinney Act is mentioned in this passage in order to show that ___.

A. the address of grade-school children should be located.

B. all homeless people are entitled to free education.

C. the educational problems of homeless children are being recognized.

D. the estimates on homeless children are hard to determine.

5.The passage mainly deals with ____.

A. the social status of older males.

B. estimates on the homeless population.

C. the legal problems of the homeless children.

　　D. the educational problems of homeless children.

Until the 1980s, the American homeless population comprised (组成) mainly older males. Today, homelessness strikes much younger part of society. In fact, a 25-city survey by the U. S. Conference of Mayors in 1987 found that families with children make up the fastest growing part of the homeless population. Many homeless children gather in inner cities; this transient(变化无常的) and frequently frightened student population creates additional problems — both legal and educational — for already overburdened（负担过重的）urban school administrators and teachers.
Estimates of the number of homeless Americans range from 350,000 to three million. Likewise, estimates of the number of homeless school children vary radically. A U.S. Department of Education report, based on state estimates, states that there are 220,000 homeless school-age children, about a third of whom do not attend school on a regular basis, But the National Coalition for the Homeless estimates that there are at least two times as many homeless children, and that less than half of them attend school regularly.
One part of the homeless population that is particularly difficult to count consists of the “throwaway” youths who have been cast of their homes. The Elementary School Center in New York City estimates that there are 1.5 million of them, many of whom are not counted as children because they do not stay in family shelters and tend to live by themselves on the streets.
Federal law, the Stewart B. McKinney Homeless Assistance Act of 1987, includes a section that addresses the educational needs of homeless children. The educational provisions of the McKinney Act are based on the belief that all homeless children have the right to a free, appropriate education.

1. 1.

   It is implied in the first paragraph that ____.

   1. A.
      the writer himself is homeless, even in his eighties
   2. B.
      many older homeless residents are going on strike in 25 cities
   3. C.
      there is a serious shortage of academic facilities (设施).
   4. D.
      homeless children are denied the opportunity of receiving free education
2. 2.

   The National Coalition for the homeless believes that the number of homeless children is _____.

   1. A.
      350,000
   2. B.
      1,500,000
   3. C.
      440,000
   4. D.
      110,000
3. 3.

    One part of the homeless population is difficult to estimate. The reason might well be ____.

   1. A.
      the homeless children are too young to be counted as children
   2. B.
      the homeless population is growing rapidly
   3. C.
      the homeless children usually stay outside school
   4. D.
      some homeless children are deserted by their families
4. 4.

   The McKinney Act is mentioned in this passage in order to show that ___.

   1. A.
      the educational problems of homeless children are being recognized
   2. B.
      the estimates on homeless children are hard to determine
   3. C.
      the address of grade-school children should be located
   4. D.
      all homeless people are entitled（有权利的） to free education
5. 5.

   The passage mainly deals with ____.

   1. A.
      the legal problems of the homeless children
   2. B.
      the educational problems of homeless children
   3. C.
      the social status of older males
   4. D.
      estimates on the homeless population