• 站内搜索:

70天攻克考研英语阅读 DAY40

2006-7-28 01:04  

  Increasing reading speed

  Directions:Do the word recognition drills below.Note the words on the left,then underline them every time they appear in the same form to the right.No regression,no vocalization.Try to finish in 15 seconds or less.

  Starting Time:

  1. diagnosediagnosis diagnostic diagraph diagnose diagonal

  2. immuneimmunize immunity immutable immune immure

  3. organismorganic organize organizer organism organ

  4. diseasediseased diseases deserve dessert disease

  5. destroydestroyer destruct destructive betray destroy

  6. despitedespise despair deteriorate despite despond

  7. effectelectrets elected effect effective effort

  8. infectinfection infective infectious infect effect

  9. exposeexposed exposition expositive exposure expose

  10. throughthroughout throat though through throaty

  Finishing Time: Total Reading Time:

  Errors: Check each line carefully for mistakes.

  AIDS:The Nation,s Worst Public Health ProblemEvery 10 months the number of people with AIDS doubles. So far,about 15,000 people in the United States have been diagnosed as having the deadly disease. Over half of these people have already died. It's been called "the disease of the century."But what is this plague that's become our number one publichealth enemy?

  AIDS (acquired immune deficiency syndrome,or African swine fever virus)is caused by a virus with the shorthand name HTL -  III/LAV. A virus is a microscopic organism that carries an infectious disease. The AIDS virus was found in human white blood cells in 1983 .(It has so far been found in only four body fluids:blood,semen,saliva,and tears. ) It invades white blood cells called helper T cells and turns them into tiny factories that produce more of the AIDS virus.

  The AIDS virus eventually does an about face and kills the helper T cells which are very important in keeping up the body's immune,or disease fighting,system. Once the helper T cells are destroyed,the immune system can't protect itself against illness. People don't die of AIDS. They die of other diseases their bodies can't fight off!

  According to the Centers for Disease Control,between 60,000 and 120,000 people have something called AIDS-related complex, a milder form of the disease. Its symptoms include swollen lymph glands, fatigue, fever, night sweat, diarrhea, and gradual weight loss. It is estimated that about one in every 3,500 persons may have been exposed to the AIDS-linked virus. But that does not mean these people are carriers of the virus or that they will develop AIDS. But by this time next year, there may be 26,000 full-blown AIDS cases in this country.

  Despite the availability of information, fear and ignorance have created myths about this mysterious disease. Still, in the face of all the disturbing facts, doctors insist that AIDS can be avoided. The virus is only transmitted by blood and other body fluids. Infected body fluids must enter the body in fairly large quantities through a body opening, mucous membrane, or wound in order to transmit the virus. Mere contact with unbroken skin is not considered dangerous. In the thousands of reported cases to date, no one has been infected through saliva or tears. Furthermore, the virus is quickly killed upon exposure to the air. And there are no documented cases of one child catching AIDS from another.

  You cannot contract ("catch")AIDS by being around someone who has it;it is only transmitted through intimate sexual contact or contact with the blood of an infected person. There is no evidence that it is spread through sneezing,coughing, talking,or shaking hands. The AIDS virus is seldom found in saliva. But as a precaution,French kissing (when saliva is exchanged)by people with AIDS or by people who may be AIDS carriers is not recommended.

  In the short time since scientists first recognized that they were dealing with a new disease,researchers have learned a lot about AIDS. Thanks to the tools of genetic engineering and molecular biology,researchers have isolated the virus that causes AIDS. Right now they are working on a vaccine(drug that boosts the body's defense against a disease)to fight the disease. A highly accurate test has been developed that can detect those who have been exposed to the AIDS virus. This should ensure that AIDS will no longer be spread through the nation's blood banks.

  "A person with AIDS cannot transmit the infection to others through casual contact,"explains Dr. Ronald Grossman,a New York physician who works with a lot of people with AIDS," because if your immune system is normal,your body will fight off the infection. Children with AIDS pose no risks to other children under normal circumstances."

  Although there are doctors who don't agree with Dr. Grosssman,most agree that overcoming ignorance about AIDS is vitally important. "Young people who overcome their fears and prejudices about AIDS will be better able to love and care for people they might know who came down with the disease," says Dr. Grossman.

  Let us hope that in the not too distant future medical science will be able to stop the deadly AIDS virus in its tracks.

  ——from Science World,Dec. 13,1985

  Time: 528 words=wpm

  minutes

  EXERCISESⅠ。READING COMPREHENSION

  Select the answer which is most accurate according to the information given in the passage.

  1. As it is used in the passage,the abbreviation "AIDS"stands for .

  A. agriculture industrial development system

  B. aircraft integrated data system

  C. acquired immune deficiency syndrome

  D. Air Force Intelligence Data Handling System

  2. According to the information of the passage,it was in 1983 that scientists found the AIDS virus in .

  A. man's semenB. human salivaC. human tearsD. human white blood

  3. Which of the following can be concluded from the passage .

  A. It is AIDS that causes people to die.

  B. Because the AIDS virus destroys helper T cells,people lose immunity to other disease.

  C. One attack of AIDS usually gives a person immunity to that disease for years

  D. Helper T cells have a strong affinity for the AIDS virus.

  4. Which of the following is false according to the information of the passage?

  A. It is said that about one out of 3,500 persons in the U. S. might have been in touch of the AIDS virus and must suffer from the disease soon.

  B. Swollen lymph glands and fatigue are symptoms of the persons who carry the AIDS virus.

  C. The persons who suffer from AIDS may have a high fever and night sweats.

  D. The person carrying the AIDS virus may have a disease in which the bowels are emptied too often and in too liquid a form

  5. The author describes that the AIDS virus may be transmitted by all of the following EXCEPT .

  A. membraneB. woundC. saliva or tearsD. a body opening

  6. Based on the information in the passage,you can infer that .

  A. immunity from AIDS has been obtained by vaccination

  B. the researchers have a good knowledge of AIDS through practice.

  C. the researchers have taken effective measures to avoid spreading the AIDS virus

  D. by means of modern science and technology,people are bound to eliminate the deadly AIDS  virus once and for all

  7. From Dr. Grossman's point of view, .

  A. young fellows without their fear and prejudices about AIDS can take to and take care for the persons with AIDS

  B. people who suffer from AIDS may transmit the AIDS virus to other people through casual touch

  C. under no circumstances will people with AIDS transmit the infection to the others

  D. if a person's immune system is O.K.,he will never suffer from AIDS

  8. The tone of the passage can be best described as: .

  A. opinionatedB. sarcasticC. argumentativeD. informative

  Ⅱ。 CONTEXTUAL REFERENCE

  Guess the meaning of the following words in italics using reading techniques.

  1. Parasitology may be defined as the branch of biology which deals with the nature of parasitism and its effects on both the parasite and the host. Broadly defined,a parasite is an organism which lives for all or part of its life on or in another organism from which it derives some benefit,such as food,shelter or protection. Organisms living on the host are known as ecto- parasites;those living within the host organism are called endoparasites.

  2. Blue light seems to help newborn infants who are suffering from jaundice. Jaundice,a liver ailment,turns a person's skin and eyeballs yellow.

  3. The recommended 65for indoor temperatures may be too low for persons with circulatory problems,some older persons,and some children who may be susceptible to hypothermia (a possibly fatal drop in body temperature)。

  4. Reducing salt intake towards an average of five grams a day would probably result in a lower incidence of hypertension - high blood pressure.

  5. Anesthesia in any part of the body means a loss of sensation,either permanent or temporary. The term is usually used to describe the artificially,produced loss of sensation which makes a surgical operation painless.

  6. Hepatitis is a liver disease that is sometimes fatal. There are two types of hepatitis:Type A,usually contracted from contaminated food and water,and type B,formerly called serum hepatitis,because it is often found among people who have undergone blood transfusions.

  Ⅲ。 CLOZE

  Complete the following passage by filling in the blanks with appropriate words.

  AIDS

  Doctors say there is no doubt that AIDS (Acquired Immune Deficiency Syndrome) is deadly. In the United States about 20000 people have suffered from the disease. More than one half of them have died. But doctors say evidence also shows there is no reason for people to panic or to become terrified by the disease. The AIDS virus is spread sexually or by infected blood. The doctors say their studies show the disease is not spread through normal,close social activities.

  A study by one research team was   1  in the New England Journal of Medicine. The doctors    2     101 family members who lived     3     AIDS patients     4     almost two years. Most of them were poor and     5     in crowded conditions. The family members     6     many personal goods with the     7. These included toothbrushes, drinking glasses, beds, towels     8     toilets. Doctors said     9     one family member, a fiveyearold girl,    10   the AIDS virus. They note,    11,that the girls   12   has the disease. They believed the girl probably was   13   with the virus. No other family member in the study got the AIDS   14   or showed any   15   of the disease.

  The head of the study,Jenold Friedland, said he   16   the finding will help reduce the 17     that many people have about AIDS. Dr. Friedland said if the disease is not    18   spread in crowded homes, it also will not be  19  easily in factories, offices, schools and other public places. Dr. Friedland said the study also shows there is no     20     to punish AIDS patients by forcing them to live separately from other people.

  American health officials recently warned,however,that some health care workers should take special care. The report noted the AIDS virus is carried in blood and other body fluids. It said health care workers should put protective covers over their eyes and skin during medical operations,dental work or during other times when the patient may bleed. In the United States, most AIDS patients are homosexual(同性恋爱)men,drug users who used infected needles and people who received infected blood. More recent studies show the AIDS virus also can be spread during heterosexual (异性爱的) relations. It can spread either from a man to a woman or from a woman to a man.

栏目相关课程表