B

Although we already know a great deal about flu, and although the World Health Organizations is constantly collecting detailed information from its chain of flu reference laboratories throughout the world, it is extremely difficult for epidemiologists, who study infectious diseases, to predict when and where the next flu epidemic will occur, and how serious it will be. 

There are three kinds of flu virus, known as A, B and C. flu C virus is relatively stable and causes mild infections that do not spread far through the population. The A and B types are unstable, and are responsible for the epidemics that cause frequent concern. Following any virus attack, the human body builds up antibodies （抗体） which can be changed into immunity to that type of virus but a virus with the ability to change its character is able to bypass this protection. Variability（可变性） is less developed in the flu B virus, which affects only human beings. As flu B virus may cause a widespread epidemic but will have little effect if introduced into the same community soon afterwards, since nearly everyone will have built up antibodies and will be immune. The flu A virus, which affects animals also, is extremely unstable and is responsible for some of the worst outbreaks of the disease, such as the world epidemic, of 1918&1919, when about half the world's population were infected and about twenty million people died, some from pneumonia caused by the virus itself and some from secondary complication caused by bacteria. Accurate prediction is difficult because of the complication of the factors. A particular virus may be related to one to which some of the population have partial involved immunity. The extent to which it will spread will depend on factors such as its own strength, or virulence （病毒性）, the ease with which it can be transmitted and the strength of the opposition it encounters （遇到）. Scientists, however, have a reliable general picture of the world situation. 

55. Which of the following is the most appropriate title for the passage? 

A. Symptoms of Flu                                                       B. Man Vs Flu Virus 

C. WHO: The Major Organization against Flu Virus           D. Variability of Flu Virus 

56. What does the author say about the flu B virus? 

A. B Virus is relatively stable and causes mild infections that do not spread far through the population.

B. B Virus is unstable, and is responsible for the epidemics that cause frequent concern.

C. B virus is extremely unstable and is responsible for some of the worst outbreaks of the disease.

D. B virus has a very developed variability, and it affects only human beings.

57. Which of the following is NOT mentioned as a factor contributing to the extent to which a virus spreads?

A. The strength of the virus.               B. The ease with which the virus can be transmitted.

C. The strength of the opposition. D. The immunity the virus can bring about.

58. This article is quite probably ________.

A. a piece of news                             B. a special science report

C. an introduction to a book               D. a scientific fiction

If you are human, you can’t help but experience times when everything seems to be going wrong ．You must also  21  as if your life is completely out of control at times．It is during those “down times” that words of encouragement from family, friends, co-workers or  22  strangers can boost (增强) your spirits．It is also during those  23  that destructive words can be devastating (毁灭性的) and sink you deeper and deeper into depression．

   For example, consider this story about a group of  24  who were traveling through the woods when  25  of them fell into a deep pit (坑)．All of the other frogs gathered around the  26  ．When they saw how  27  the pit was, they told the two  28  frogs they would never get out．

   The two frogs didn’t obey what other frogs said and tried to  29  out of the pit．The other frogs kept telling them not to jump,  30  it was in vain．Finally, one of the frogs followed what the other frogs were saying and simply 31 ．He fell down and  32 ．The other frog continued to jump as   33  as he could．Once again the crowd of frogs shouted at him to  34  the pain．The more they 35 , the harder he jumped and finally he  36  to safety．

   When he  37 , the other frogs asked him why he continued to jump when they were all  38  him to simply quit．The frog  39 to them that he was a little bit deaf．He thought they were  40 him all the time．

21．A．think B．experience     C．seem D．feel

22．A．so    B．just   C．even       D．ever

23．A．processes        B．times      C．courses    D．practices 

24．A．frogs      B．mice       C．dogs       D．cats

25．A．two   B．three       C．many      D．few

26．A．hole        B．pit     C．water     D．well 

27．A．muddy     B．wide        C．deep       D．long

28．A．uncomfortable        B．unpleasant      C．unhappy   D．unfortunate

29．A．run   B．walk        C．climb       D．jump 

30．A．so    B．since        C．because     D．although 

31．A．gave out B．gave up  C．gave away       D．gave off

32．A．died        B．wounded        C．destroyed        D．damaged

33．A．fast B．hard        C．easily       D．swiftly

34．A．help  B．ban        C．stop        D．forbid

35．A．cried       B．spoke       C．shouted     D．read

36．A．get it      B．forget it   C．use it       D．made it 

37．A．turned out       B．kept out   C．got out          D．held out

38．A．talking to       B．shouting at       C．throwing at          D．speaking to

39．A．explained  B．announced       C．introduced       D．told 

40．A．encouraging  B．helping    C．pulling    D．dragging

A few weeks ago, I followed a friend into an art supply store．I found him picking out tubes of water-color paint, which __36__ me because he’s not an artist.
"I   37  up for a water-color class, and it starts next week," he said．"I really don’t have  38_ for it, but it was on my list of 50 things to do before I die, so I _39__ it．Every few months I look at the list and decide what to focus on next． 40  I had the list, I complained a lot about what I was  41 _ in my life．Now I just bury myself in doing these things．Write your own list．and you’ll   42  what I mean．"
So that night．I did just that, and he was right．The list revealed （显露出） a whole lot about what was __43__ to me．It also revealed how _44___ behind I am at getting to the things I really want．
I filled up the first twenty __45__ quickly, but then began to think carefully．
Eventually I __46_ items I’ve thought about for years, and __47__ I’ve carried with me since I was young．When I  48  the list later, some entries surprised me．
First, I want to _ 49_ much more, particularly now that my children are   50_ and can go with me to see the world．I would like to take them to bike through Denmark and camp in the Canadian Rockies．
I’m also surprised to _51_ some things on the list that need to be done soon．If I’m going to learn to roller-blade （轮滑）, __52_, I’d better start before I turn 50．
Like my friend, I now have an alternative to __53__．When I’m bored with life, I take out my list．
My friend told me the _54_ was preparing the ground so that life could work in mysterious ways．"If you want your ship to come in, you must build a dock （码头）," he said．
Thanks to my _55__, I’m working on some big docks．

When you close your eyes and try to think of the shape of your own body, what you imagine (or rather, what you feel) is quite different from what you see when you open your eyes and look in the mirror. The image you feel is much vaguer（模糊的） than the one you see. And if you lie still, it is quite hard to imagine yourself as having any particular size or shape.
When you move, when you feel the weight of your arms and legs and the natural resistance of the objects around you, the “felt” image of yourself starts to become clearer. It is almost as if it were created by your own actions and the feelings they cause.
The image you create for yourself has rather strange proportions（部分）; certain parts feel much larger than they look. If you get a hole in one of your teeth, it feels enormous; you are often surprised by how small it looks when you inspect it in the mirror.
Although the “felt” image may not have the shape you see in the mirror, it is much more important. It is the image through which you recognize your physical existence in the world. In spite of its strange proportions, it is all one piece, and since it has a consistent right and left and a top and bottom, it allows you to locate new feelings when they occur. It allows you to find your nose in the dark and point to a pain.
If the felt image is damaged for any reason—if it is cut in half or lost as it often is after certain strokes （中风）which wipe out recognition of one entire side –these tasks become almost impossible. What is more, it becomes hard to make sense of one’s own visual appearance. If one half of the “felt” image is wiped out or injured, the patient stops recognizing the affected part of his body. It is hard for him to find the location of feelings on that side, and, although he feels the doctor’s touch, he locates it as being on the undamaged side.
【小题1】According to the passage the “felt” image          the mirror image.

When you close your eyes and try to think of the shape of your own body, what you imagine (or rather, what you feel) is quite different from what you see when you open your eyes and look in the mirror. The image you feel is much vaguer（模糊的） than the one you see. And if you lie still, it is quite hard to imagine yourself as having any particular size or shape.
When you move, when you feel the weight of your arms and legs and the natural resistance of the objects around you, the “felt” image of yourself starts to become clearer. It is almost as if it were created by your own actions and the feelings they cause.
The image you create for yourself has rather strange proportions（部分）; certain parts feel much larger than they look. If you get a hole in one of your teeth, it feels enormous; you are often surprised by how small it looks when you inspect it in the mirror.
Although the “felt” image may not have the shape you see in the mirror, it is much more important. It is the image through which you recognize your physical existence in the world. In spite of its strange proportions, it is all one piece, and since it has a consistent(前后一致的) right and left and atop and bottom, it allows you to locate new feelings when they occur. It allows you to find your nose in the dark and point to a pain.
If the felt image is damaged for any reason—if it is cut in half or lost as it often is after certain strokes （中风）which wipe out recognition of one entire side –these tasks become almost impossible. What is more, it becomes hard to make sense of one’s own visual appearance. If one half of the “felt” image is wiped out or injured, the patient stops recognizing the affected part of his body. It is hard for him to find the location of feelings on that side, and, although he feels the doctor’s touch, he locates it as being on the undamaged side.
【小题1】According to the passage the “felt” image       the mirror image.