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】

試題分析：本文講述了一種新型的治療艾滋病的方法，把病人的血液抽出來，加熱以后再輸回病人的體內(nèi)，通過這種方式來治療艾滋病。

1.A 主旨大意題。根據(jù)文章主題段第一段第一行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.說明本文是關(guān)于治療艾滋病的一種新的治療方法，故A正確。

2.D 細(xì)節(jié)題。根據(jù)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.說明是把病人的血液先抽出來，然后進(jìn)行加熱，最后在輸回病人體內(nèi)，故D正確。

3.A 細(xì)節(jié)題。根據(jù)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.說明在先前的實(shí)驗(yàn)中，病人的血液在加熱的過程中出現(xiàn)了問題，故A正確。

4.B 細(xì)節(jié)題。根據(jù)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說明這種方法并不能完全第殺死艾滋病的病菌，故B正確。

5.C 推理題。根據(jù)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.說明到目前為止這個(gè)治療的方法是成功的，故C正確。

考點(diǎn)：考查科技說明文

點(diǎn)評(píng)：本文講述了一種新型的治療艾滋病的方法，本文屬于科普類的短文，此類文章的最大的障礙是詞匯以及考生對(duì)閱讀內(nèi)容的不熟悉，需要考生在閱讀的時(shí)候有足夠的耐心。要養(yǎng)成在上下文串聯(lián)中猜測詞義的能力，根據(jù)上下文中出現(xiàn)的同義詞，近義詞，反義詞，以及詞義的解釋來理解生詞。同時(shí)要抓住文章的中心，不要受其他信息的影響。要根據(jù)題目及選項(xiàng)以及文章的上下文串聯(lián)合理的判斷推理。

 

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