An experimental treatment that causes AIDS patients to develop a dangerously high fever has shown promise as a way of prolonging and improving the patients’ life.Called the Biologic-HT System, the ne 题目和参考答案——青夏教育精英家教网—

题目内容

An experimental treatment that causes AIDS patients to develop a dangerously high fever has shown promise as a way of prolonging and improving the patients’ life.Called the Biologic-HT System, the new treatment lets doctors extract the blood of a patient and heat it before circulating it back into the body. The heated blood causes the patient’s body temperature to rise above 42 degrees Celsius. In people with AIDS, that increase in temperature kills some heat-sensitive HIV, the virus, most doctors say, causes AIDS.

Heating the blood of AIDS patients has been tried before, say doctors. But during previous attempts, the treatment induced deadly chemical changes in the blood. The Biologic-HT System prevents those changes from happening, allowing the heat to kill viruses with few ill side effects.

The new heat treatment cannot be considered a cure for Aids, says president of the company that makes the system. He says the treatment doesn’t kill all traces of the virus. However, it kills enough virus particles to give a patient’s immune system a reprieve in its deadly duel with HIV.

Tests of the Biologic-HT treatment began on 36 patients earlier this year. The treatment takes about four hours, and the patient normally feels well enough to leave the hospital or clinic the following morning.

So far, the patients who have had the treatment say they feel better and have developed no new opportunistic infections—disease that strike people with damaged immune systems. The patients also have experienced about a 50 percent increase in the number of T cells in their bodies. T cells are key disease-fighting cells of the immune system and the main target of HIV.

1.This passage is mainly concerned with ____________.

A． a way for treating AIDS

B． a heat-sensitive virus

C． the immune system of the human body

D． the function of high temperature

2.The blood of the patient___________.

A． is heated with a single injection

B． is heated by being circulated at a higher rate

C． is taken out from the body and then circulated through a heating system.

D．is taken out from the body, heated outside and then put back into the body.

3.The previous attempts to use high temperature for treating AIDS failed because they_________.

A．caused chemical changes

B．could not kill HIV effectively

C．resulted in deaths

D．killed both HIV and healthy cells

4.According to the passage, the new treatment___________.

A．can kill all the HIV viruses

B．cannot eliminate the viruses completely

C． can double the number of disease-fighting cells

D．can reconstruct the patient’s immune system.

5.The result of the experiment seems to be ___________.

A．disappointing B．incomplete C．successful D．surprising

【答案】

1.A

2.D

3.A

4.B

5.C

【解析】

试题分析：本文讲述了一种新型的治疗艾滋病的方法，把病人的血液抽出来，加热以后再输回病人的体内，通过这种方式来治疗艾滋病。

1.A 主旨大意题。根据文章主题段第一段第一行An experimental treatment that causes AIDS patients to develop a dangerously high fever has shown promise as a way of prolonging and improving the patients’ life.说明本文是关于治疗艾滋病的一种新的治疗方法，故A正确。

2.D 细节题。根据第一段3,4行the new treatment lets doctors extract the blood of a patient and heat it before circulating it back into the body.说明是把病人的血液先抽出来，然后进行加热，最后在输回病人体内，故D正确。

3.A 细节题。根据第二段1,2行Heating the blood of AIDS patients has been tried before, say doctors. But during previous attempts, the treatment induced deadly chemical changes in the blood.说明在先前的实验中，病人的血液在加热的过程中出现了问题，故A正确。

4.B 细节题。根据第3段2,3,4行He says the treatment doesn’t kill all traces of the virus. However, it kills enough virus particles to give a patient’s immune system a reprieve in its deadly duel with HIV说明这种方法并不能完全第杀死艾滋病的病菌，故B正确。

5.C 推理题。根据文章最后一段So far, the patients who have had the treatment say they feel better and have developed no new opportunistic infections—disease that strike people with damaged immune systems. The patients also have experienced about a 50 percent increase in the number of T cells in their bodies. T cells are key disease-fighting cells of the immune system and the main target of HIV.说明到目前为止这个治疗的方法是成功的，故C正确。

考点：考查科技说明文

点评：本文讲述了一种新型的治疗艾滋病的方法，本文属于科普类的短文，此类文章的最大的障碍是词汇以及考生对阅读内容的不熟悉，需要考生在阅读的时候有足够的耐心。要养成在上下文串联中猜测词义的能力，根据上下文中出现的同义词，近义词，反义词，以及词义的解释来理解生词。同时要抓住文章的中心，不要受其他信息的影响。要根据题目及选项以及文章的上下文串联合理的判断推理。

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A. friends B. learners C. neighbors D. walls

A. Luckily B. Happily C. Sadly D. Surprisingly

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A. At last B. At one time C. In the end D. From the beginning

A. tired B. friendly C. taken D. fond

A. older B. healthier C. better D. younger

A. loved B. told C. disliked D. believed

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A. settled B. went C. lived D. greeted

A. pity B. pride C. surprise D. sadness

A. friend B. daughter C. son D. wife

A. energy B. time C. life D. ideas

A. happiness B. dream C. anxiety D. disappointment

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A. putting B. copying C. recalling D. taking

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A. a church B. a corporation C. a city D. a state

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A. schooling and retraining B. practice in a hospital

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C. Physicians should be better paid because they work long hours under bad conditions.

D. Physicians have great responsibility, so it is understandable that they should be well rewarded.

NEW YORK - People who keep doing some work in their field after they retire may enjoy better physical and mental health than those who stop work completely or switch to another area of work, according to a U.S. study.

Researchers from the University of Maryland said the findings suggest that prospective retirees should consider moving into so-called "bridge employment" as a transition to full retirement.

"In essence, if someone is in a field where part-time work or self-employment is possible, he or she should consider it as they plan for retirement," researcher Dr. Mo Wang, an assistant professor of psychology, told Reuters Health.

For their study, Wang and his colleagues used data on more than 12,000 workers in a U.S. health study begun in 1992. Participants, who were between the ages of 51 and 61 at the outset, were surveyed every two years over a six-year period.

Overall, Wang's team found, people who went into some form of bridge employment reported lower rates of major diseases like high blood pressure, heart disease, diabetes and arthritis during the study period than their counterparts who went straight into full retirement.

The findings were not explained by older age or worse initial health among people who opted for full retirement, the investigators report in the Journal of Occupational Health Psychology.

On top of their better physical health, "bridge" workers also tended to report fewer mental health problems, such as depression.

The same mental health benefits were not seen, however, when retirees took part-time work in other fields -- possibly, Wang said, because many of these people may have taken those jobs out of financial need rather than choice.

He noted that the lack of benefit could also stem from the fact that these retirees had to adjust to an unfamiliar job position or had to make lifestyle changes.

Bridge work, particularly in one's accustomed field, may benefit physical and mental health for a number of reasons, according to Wang.

In general, he explained, such work may help older adults maintain the active lifestyles they had during their careers and decrease any stress they might feel from the transition into retirement. wwwWang said when it comes to mental health, for instance, bridge work may help by allowing people to keep some of the "role identity" that they have formed over their careers.

Staying active in general, not only through work, can also benefit retirees' physical health, Wang noted. He added, however, that any mental health benefits are likely to depend on the type of activity -- whether it is something that the person truly enjoys, and that helps ease any stress of moving into retirement.

"These findings," Wang said, "suggest that for retirees and prospective retirees, carefully considering whether to engage in bridge employment -- and if so, what types of bridge employment -- is quite important."

What does the underlined phrase “at the outset” mean?__________

A. at least B. at least C. at the beginning D. at last

People who went into some form of bridge employment have less chances to get the following diseases, EXCEPT___________.

A. arthritis B. heart disease C. diabetes D. low blood pressure

Which of the following statement is WRONG?_________

A. As long as retirees move into “bridge employment”, they must be healthier than those who do not.

B. The participants in the study were between 51 and 61 years old.

C. The bridge workers are also less likely to get depression.

D. Staying active is beneficial to the retirees’ physical health.

What can we infer from the passage?________

A. The study was begun in 1992 and lasts for two 6-year periods

B. If a bridge worker is older than 61 years old, it does not mean that he will get a better health than others who enjoy full retirement.

C. Only by moving into “bridge employment” can the retirees enjoy better health both physically and psychologically.

D. Any activity can benefit the retirees’ mental health.

Which is the best title of the passage?

A. A US study

B. Bridge Work

C. Working after retiring can be good for your health

D. Stay active

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