Far from the land of Antarctica, a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

    For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? There must be some secrets. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.

    Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish's blood and measured its freezing point.

    The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

    The scientists' next research job was clear: find out what in the fish's blood kept it from freezing. Their search led to some really strange things made up of a protein(蛋白质) never seen in the blood of a fish before. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

    Study showed that it is an unusual kind of protein. It has many small sugar molecules(分子) held in special positions within each big protein molecule. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein, or AFGP.

1. What is the text mainly about?

   A. The terrible conditions in the Antarctic.     B. A special fish living in freezing waters.

   C. The ice shelf around Antarctica.              D. Protection of the Antarctic cod.

2. Why can the Antarctic cod live at the freezing temperature?

   A. The seawater has a temperature of -1.88℃.

   B. It loves to live in the ice-salt mixture.

   C. A special protein keeps it from freezing.

   D. Its blood has a temperature lower than -2.05℃.

3. What does "glycol-" in the underlined word "glycoprotein" in the last paragraph mean？

A. sugar                B. ice          C. blood            D. molecule

 完形填空（共20题，每小题1分，满分20分）

A couple of months ago I was renting a house to work from. I was fairly well set up, but didn't own a lawn mower(割草机) and after a week I __26___ that I would have to find some way to deal with the __27___ grass! Funds were short, and I was on a fairly tight budget which didn't extend(包括)to __28___ lawnmowing company.

I was thinking about this one Sunday as the "Mr. Whippy" ice cream van （大篷车）__29__outside on the street. I hadn't had a Mr. Whippy ice cream for years, and  I __30__my coin purse and __31__outside. On the pavement were three young __32__playing. I thought a couple of them may have been from next door, but I was new there and hadn't really __33__anyone yet.

It was a __34__day and I asked them if they'd like an ice cream. "Yes, please," they replied__35___. At that moment a fourth boy _36___them from the neighboring house. Yes, he'd __37__one too!! And there was just enough _38__to cover five ice creams. As I left the van, I heard the lady serving the boys say, "That was a really __39__ thing that lady did for you boys. Don't forget to __40__ her." I smiled as I went inside to carry on working.

I left for work that evening, and didn't __41__until the Tuesday morning. As I came back, I realized something was__42__: Yes, my lawns had been mowed and my gardens had been weeded. I felt this enormous __43__ rush into my heart. I knew my neighbors had done this for me.

This act of __44__not only made a big difference to me, __45_ it was also inspired me to act further in our community.

1.                A．hoped         B．promised       C．imagined  D．realized

2.                A．drying          B．short           C．growing  D．new

3.                A．paying         B．managing       C．serving   D．operating

4.A. left            B. stopped          C started           D. passe

5.                A．made          B．bought         C．opened   D．grabbed

6.                A．looked         B．stayed          C．headed   D．played

7.                A．boys           B．girls            C．pupils    D．men

8.                A．found          B．met            C．taught    D．touched

9.                A．bad            B．long           C．hot  D．cool

10.               A．enthusiastically   B．cautiously       C．simply D．seriously

11.               A．saw           B．upset          C．joined D．led

12.               A．received       B．finish          C．order D．love

13.               A．space          B．power         C．cloth D．change

14.               A．natural         B．nice           C．easy  D．basic

15.               A．thank          B．remind         C．visit  D．calm

16.               A．sleep          B．return         C．recover   D．suffer

17.               A．different       B．dangerous      C．important  D．possible

18.               A．courage        B．fortune         C．interest   D．warmth

19.               A．bravery        B．politeness       C．kindness   D．faith

20.               A．as             B．but            C．if D．or

Six Americans are working on a new highway. But this highway won't have any traffic．It's an "ice highway" to the South Pole.

The team has just finished a second year of work on the 1,020-mile highway. "The road is the greatest single footprint of activity we've seen in the Antarctic (南极洲)," said Alan Hemmings, an Australian environmentalist.

The highway will provide a new way for supplies to be trekked (拉, 搬) across the earth on tractor-pulled sleds (雪橇). This method will use a lot less fuel than an aircraft, the current (当前的) way that scientists and supplies reach the Amundsen-Scott Base, a U.S. research station in the South Pole. The highway will also allow for equipment that is too big for planes to carry to be brought to Antarctica．Even with these benefits, there is one disadvantage—a round trip on the road will be 30 days, compared to a few hours by plane.

Making this 20-foot-wide road isn't easy, and it takes a lot of time. The crew (工作队) has been working on the road for two summers, when it's warmer and easier to work with the ice. It probably won't be completed until 2006.

Crevasses (裂缝), or cracks, in the land often make the construction difficult. Crevasses are kind of like pot holes that form when surface ice is stretched．This can be very dangerous, especially when the crevasses are hidden under a layer (层) of snow and can't be seen.

"Last year it took us three months to go three miles across a crevasse field, full of dangerous, hidden crevasses," said the project's manager, John Wright. Each year, more crevasses appear and they have to be filled with snow and ice so the road is safe for travel. The road will also be lined with green flags so travelers know where the safe surface is.

It will probably take ______ years to complete the ice highway.

       A．2     B．4      C．6      D．8

When it is finished, the highway will not be used for ______.

       A．giving supplies to the research station in the South Pole

       B．taking scientists to the South Pole

       C．taking travelers to a tour of Antarctic

       D．bringing huge equipment to Antarctic

How many miles can be covered at most each day if you take the ice highway to the South

Pole?

       A．30.    B．34.    C．68.    D．88.

Which of the following is true according to the passage?

       A．Other crevasses won’t appear if a crevasse has been filled.

       B．Many new crevasses will form after a crevasse has been filled.

       C．Travelers can drive their sleds on the ice highway freely.

       D．There will be less danger if the crevasses are covered by snow.

One afternoon in January in 1998, Susan Sharp, 43, and her 8-year-old son David, were walking across an icy square, when Susan's cane(手杖) slipped on the ice. Her face   36   first into the mud. David   37   her mother's side, “Are you all right, Mom”   38  , Susan pulled herself up, “I'm okay, Honey,” she said.

Susan was falling more   39   since she had trouble walking. Every inch of ice was a   40   danger for her. “I wish I could do something,” the boy thought. David, too, was having   41   of his own. The boy had a speech problem, so at school he talked   42  .

　　One day, David's teacher announced a   43   homework. "Each of you is going to come up with an   44  ," she said. This was for "INVENT AMERICA", a national competition to encourage creativity in children.

　　An idea   45   David one evening. If only his mother's cane didn't slip on the ice. “What if I   46   your cane to a nail coming out of the bottom” he asked his mother.

　　“   47   the sharp end would scratch(划破) floors,” Susan said.

　　“No, Mom, I   48   make it like a ball-point pen. You take your hand off the button and the   49   returns back up.” Hours later the cane was finished. David and his father   50   as Susan used it to walk 50 feet about the   51  . Happily Susan cried out, “It   52   !”

　　In July 1999, David was  53   national winner for the "INVENT AMERICA". David began to make public appearance. Thus he was forced to communicate  54  .Today, David is nearly free of his speech problem, and his   55   is becoming well accepted.

第二节 完形填空(共20小题,每小题1.5分，满分30分)

阅读下面短文，从短文后所给四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。    ‘

    In the wake Of Chicago's worst ever winter，it snowed heavily for almost  10 days off and on，until all of the rooftops were loaded，many overloaded，with snow．Robert McGrath saw  36   run out to the  37    to fetch some boxes.

    Seconds   38   while he was  39  on his work，he heard a crash!

   40  ，he saw the roof of the garage bad  41   in. McGrath did not stop to put his hat or coat on. He 42  out of the house．grabbed a snow shovel，and called    43   for his neighbors to come and help.

    Yelling and digging，with   44   freezing on his face-clearing snow，pulling   45  

boards and anxiously calling his wife's name---he heard her   46   and then saw he hand. He kept digging，clearing and pulling...

  Within   47   he had his wife in his arms and was sobbing，"Are you all right? Are you all right? I   48   you were dead．On baby，I love you so much!”She was  49   .

  What Robert McGrath did NOT know was this：Mrs. McGrath had gone into the garage  50 one door and out through another. She was   51   in the house when she heard her husband's voice.   52   she went to the window to took out and saw her husband digging and shouting her   53   and pulling out planks of wood，feverishly trying to rescue her. She could not let her gallant rescuer   54   .So she put her coat on again，went outside and quietly entered the garage through the back door----and   55    her husband to be her hero.

36. A. his friend        B. his wife         C. his neighbor       D. a stranger

37. A. garage          B．garden         C．store            D. kitchen

38. A. ago             B. before          C. later             D. after

39. A. paying          B. confusing        C. drawing          D. focusing

40. A. Looking out      B. Rushing out      C. Getting out       D. Coming out

41. A. made           B. fallen           C. pulled            D. let

42. A．found          B. walked          C. rushed           D. showed

43. A. proudly         B. kindly           C．friendly         D. loudly

44. A．snow          B. ice              C. sweat            D. water

45. A. down           B. away            C. on              D. toward

46. A. voice           B. sound            C. noise            D. name

47. A. minutes         B. days             C. hours            D. time

48. A. intended        B. wondered         C. thought           D. considered

49. A．hurt           B. wounded          C. frightened        D. fine

50. A. around          B. through           C. into             D. past

51. A. safe            B. quiet             C. peaceful          D. worried

52. A. However        B. Or               C. But              D. So

53. A. helps           B. mothers           C. name            D. neighbors

54. A. up             B. down             C. out               D. in

55. A. allowed         B. made             C. advised            D. Persuaded