Space is dangerous place, not only because of meteors(流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation(輻射) from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

    Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem”. Scientists have recon to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage--a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed(畸形的) children or even grandchildren.

Missions of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

72. According to the first paragraph, the atmosphere is essential to man because      .

   A. it protects him against the harmful rays from space    B. it provides sufficient light for plant growth

C. it supplies the heat necessary for human survival        D. it screens off the falling meteors

73. The harm radiation has done to the Apollo crew members       .

   A. is insignificant     B.seems overestimated     C. is enormous    D. remains unknown

74. It can be inferred from the passage that       .

  A. the Apollo mission was very successful

  B. protection against space radiation is no easy job

  C. astronauts will have deformed children or grandchildren

  D.radiation is not a threat to well-protected space explorers

75. The best title for this passage would be       .

  A. The Atmosphere and Our Environment    B. Research on Radiation

  C. Effects of Space Radiation                     D. Importance of Protection Against Radiation

Pain in the neck

We all know what it is like to be unable to turn your head because of a cold in the muscles of your neck，or because an unexpected twist has made your neck ache and stiff. Your whole body feels tight. The slightest move makes you jump with pain. Nothing could be worse than a pain in the neck.

That is why we use the phrase to describe some people who give you the same feeling.We have all met such people.

One is the man who always seems to be clapping his hands―often at the wrong time― during a performance in the theater. He keeps you from hearing the actors.

Even worse are those who can never arrive before the curtain goes up and the play begins. They come hurrying down to your row of seats. You are comfortably settled down，with your hat and heavy coat in your lap. You must stand up to let them pass. You are proud of your self-control after they have settled into their seats...Well，what now...Good God，one of them is up again. He forgot to go to the men’s room，and once more you have to stand up，hanging on to your hat and coat to let him pass. Now，that is “a pain in the neck”.

Another，well-known to us all，is the person sitting behind you in the movies. His mouth is full of popcorn；he is chewing loudly，or talking between bites to friends next to him. None of them remain still. Up and down，back and forth，they go-for another bag of popcorn，or something to drink.

Then，there is the man sitting next to you at a lunch counter smoking a smelly cigar. He wants you to enjoy it too，and blows smoke across your food into your mouth.

We must not forget the man who comes into a bus or subway car and sits down next to you，just as close as you will let him. You are reading the newspaper and he leans over and stretches his neck so that he can read the paper with you. He may even turn the paper to the next page before you are ready for it.

We also call such a person a “rubber neck”, always stretching his neck to where it does not belong，like neighbors who watch all your visitors. The enjoy invading your privacy. People have a strong dislike for rubbernecks. They hate being spied upon.

68.Where can you find this passage?

A. Medicine dictionaries.                B. Social science books.

C. Kids’ comic books.                 D. Science text books.

69.How do you feel when late comers walk back and forth in front of you in a cinema?

A. Ignored.            B. Bored.               C. Disturbed.         D. Relaxed.

70.A “rubber neck” often __________.

A. says bad words behind people      B. quarrels face to face with neighbours

C. bargains the price with sales women D. asks about other people’s business

71.Which of the following is a “pain in the neck”?

A. Someone who helps you find your seat in a movie theatre.

B. Someone who smokes in a smoking section on a train.

C. Someone who throws trash（ 垃圾）out of his car window on the highway.

D. Someone who goes to the doctor for his severe pain in the neck.

64．All of the following must be submitted EXCEPT           ．

    A．phone number       B．English teacher's name

    C．school address     D．time of birth

65．We can conclude from the passage that Teen Ink is a            ．

    A．magazine              B．publishing house

    C．research center          D．a(chǎn)dvertising company

66．What can be learned from the passage？

  A．They must ask your permission before having your work published．

  B．The copyrights will be shared by Teen Ink and Pepsi．

  C．They only accept your written work．

  D．The Pepsi Company sponsors Teen Ink．

67．Choose a suitable tide for this piece of advertisement．

    A．JOIN TEEN INK

    B．EMAIL US YOUR WORK

    C．SEND US YOUR WORK

    D．KEEP IN TOUCH WITH TEEN INK

WASHINGTON (Reuters) - Two-thirds of the world's polar bear population could be gone by 2050 if predictions of melting sea ice hold true, the U.S. Geological Survey reported on Friday.

The fate of polar bears could be even worse than that estimate, because sea ice in the Arctic might be disappearing faster than the available computer models predict, the geological survey said in a report aimed at determining whether the big white bear should be listed as a threatened species.

"There is a definite link between changes in the sea ice and the welfare of polar bears," said Steve Amstrup, who led the research team. He says Arctic sea ice is already at the lowest level this year and is expected to retreat(退卻) farther this month.

That means that polar bears -- some 16,000 of them -- will disappear by 2050 from parts of the Arctic where sea ice is melting most rapidly, along the north coasts of Alaska and Russia, researchers said in a telephone briefing(簡報).

Other polar bear populations could survive beyond that date but many of those could be gone by 2100, Amstrup said. By century's end, the only polar bears left might live in the Canadian Arctic islands and along the west coast of Greenland.

"It is likely to result in loss of approximately two-thirds of the world's current polar bear population by the mid 21st century," the report summary said.

"Because the observed trajectory(軌跡) of Arctic sea ice decline appears to be underestimated(低估) by currently available models, this assessment of future polar bear status may be conservative(保守的)."

In January, the U.S. Fish and Wildlife Service suggested listing the polar bear as a threatened species, noting polar bears depended on sea ice as a platform to hunt seals, their main food.

Without enough sea ice, polar bears would be forced onto land, but they are inefficient hunters once they get out of the water and ice, the researchers said. The bears' disappearance would probably take place as young cubs(幼獸) failed to survive to adulthood and females were unable to reproduce successfully.

60. What was the U.S. Geological Survey intended to do?

  A. To determine whether the polar bear was in danger.

  B. To measure how fast the sea ice melts in the Arctic.

  C. To check the prediction of the computer models.

  D. To find out the exact number of the polar bear.

61. Which is responsible for the polar bears disappearing by 2050?

  A. The pollution of the Arctic region.              B. The temperature getting warmer.

  C. Fewer food sources being left.                   D. The sea ice melting at a high speed.  

62. The underlined word "assessment” in Paragraph 7 means _________.

   A. evaluation     B. prediction       C. calculation        D. assignment

63. What is the best title of the text?

   A. Polar Bears In Danger Now                      B. The Sea Ice Is Melting Rapidly

   C. Molar Bears Could Be Lost by 2050           D. The U.S. Geological Survey

    The case for college has been accepted without question for more than a generation. All high school graduates ought to go, because college will help them earn more money, become “better” people, and learn to be more responsible citizens than those who don’t go.

    But college has never been able to work its magic for everyone. And now that close to half our high school graduates are attending, those who don’t fit the pattern are becoming more and more, and more obvious. College graduates are selling shoes and driving taxis; college students get in the way of each other’s experiments and write false letters of recommendation in the competition for admission to graduate school. Others find no interest in their studies, and drop out often encouraged by college administrators. Some observers say the fault is with the young people themselves―they are spoiled and they are expecting too much.

    But that is a condemnation(譴責(zé))of the students as a whole, and does not explain all campus unhappiness. Others blame the state of the world, and they are partly right. We’ve been told that young people have to go to college because our economy cannot take in an army of untrained 18 year-olds. But disappointed graduates are learning that it can no longer take in an army of trained 22-year-olds, either.

    Some adventuresome educators and campus watchers have openly begun to suggest that college may not be the best, the proper, the only place for every young person after the completion of high school. We may have been looking at all those surveys upside down, it seems, and thinking of the rosy glow of our own remembered college experiences. Perhaps college does not make people intelligent(clever), ambitious, happy, liberal, or quick to learn things―maybe it is just the other way round, and intelligent, ambitious, happy, liberal, quick-learning people are only the ones who have been attracted to college in the first place. And perhaps all those successful college graduates would have been successful whether they had gone to college or not. This is heresy (異端邪說) to those of us who have been brought up to believe that if little schooling is good, more has to be much better. But opposite evidence is beginning to mount up.

56. According to the passage all of the following statements are true EXCEPT_______.

A. about half of the high school graduates continue their studies at school

B. college graduates are believed to be able to earn more money

C. administrators often encourage college students to drop out

D. more and more young people are found unfit for college.

57. Which of the following is one of some observers’ opinions?

A. The students expect so much that they are not satisfied with the hard college life.

B. The economic situation is so discouraging that the youth have to attend college.

C. College should improve because of so much campus unhappiness.

D. Colleges provide more chances of good jobs than anywhere else.

58. What does the underlined sentence in Paragraph 4 mean?

A. Our college experience proves that those surveys are incorrect.

B. The surveys may remind us of our beautiful college experiences.

C. The surveys should all be re-examined according to our college experiences.

D. Our college experiences may make us misunderstand the results of the surveys.

59. What is the main purpose of this passage?

A. To argue against the idea that college is the best place for all young people.

B. To put forward an idea that college should not be the first choice.

C. To value young people’s further education in colleges.

D. To persuade young people into working after the completion of high school.

People seem not to see that their opinion of the world is also a confession of character.

                                                      --R. W. E, erson

    It was Mother’s Day, but the young mother was a little unhappy, because she was 800 miles away from her parents. In the morning she phoned her mother to   36   her a happy Mother’s Day, and her mother told her about the beautiful    37   in the garden.

    Later that day, when she told her husband about the lilacs(丁香), he said, “I know where we can find   38   that you want. Get the children and come on.” So they went,   39   down the country roads.

    There on a small hill, they saw a lot of purple lilacs. The young woman ran quickly to    40    the flowers.    41   , she picked a few here and a few there. On their way home there was a smile on her face.

    When they were    42   a nursing home, the young woman saw an old granny sitting in a chair. She had no children with her. They    43   the car and the young woman walked to the old woman, put the    44   in her hands, and smiled at her. The old granny   45   her again and again. She smiled happily, too.

      46   the young mother came back to her car, her   47    asked her, “Who is that old granny?” “Why did you give our flowers to her?”

    “I don’t know her,” their mother said. “But it’s Mother’s Day, and she has no children. I have all of you, and I   48   have my mother. Just think how much those flowers   49   to her.”

     Hearing    50   their mother said, all the children were greatly   51  .

As we know, everyone needs love. In our society, only more love is   52   to the people, 53     those who are in great    54   , we will feel happy.   55   by this, can we have a better life, a more humorous world.

Mr. and Mrs Scott prefer a restaurant in a small town to ________ in so large a city as New York.
　　A. this　　　　　B. one　　　　　 C. it　　　　　　 D. that

 A new Ministry of Education report says about half of middle school students do not weigh a______ amount.

A. common                    B. usual               C. ordinary                  D. normal

Much new and high technology has been introduced from America, thus _____ great increase in production of the company.

  A. resulting in 　　　　　B. resulted in  　　C. resulting from　　　　 D. resulted from