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10．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．
36．This passage is mainly concerned withA．
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
37．The blood of the patientD．
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．
38．The previous attempts to use high temperature for treating AIDS failed because theyA．
A．caused chemical changes B．could not kill HIV effectively
C．resulted in deaths D．killed both HIV and healthy cells
39．According to the passage，the new treatment．B
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．
40．The result of the experiment seems to beC．
A．disappointing B．incomplete C．successful D．surprising． 试题答案
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．
解答 36．A．主旨大意题．根据文章主题段第一段第一行Anexperimental treatment that causes AIDS patients to develop a dangerously highfever 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．
37．D．细节理解题．根据第一段3，4行the new treatment lets doctors extract the blood of apatient 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．
38．A．细节理解题．根据第二段1，2行Heating the blood of AIDS patients has been triedbefore，say doctors．But during previous attempts，the treatment induced deadlychemical 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．
39．B．细节理解题．根据第3段2，3，4行He says the treatment doesn'tkill all traces of the virus．However，it kills enough virus particles to givea 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．
40．C．推理判断题．根据文章最后一段So far，thepatients who have had the treatment say they feel better and have developed nonew opportunistic infections-disease that strike people with damaged immunesystems．The patients also have experienced about a 50 percent increase in thenumber of T cells in their bodies．T cells are key disease-fighting cells ofthe 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．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
If you want to cook something quickly, you heat it from both sides. That’s what’s happening to the West Antarctic ice sheet(南极洲西部冰盖). A new study reveals that the area under the ice sheet is far hotter than previously thought, fed by an unexpected flow of geothermal energy(地热能). While the CO2 we send out heats the atmosphere above the continent, earth is melting us ice from below.
If you were to drill (钻) deep at some place on the continents, you would find that the temperature increases about 25℃ for every kilometer deep into the hole on average. Scientists call this the geothermal gradient(地热梯度). Until recently, no one had drilled deeply enough through the West Antarctic ice to determine the geothermal gradient underground. For the new study, researchers drilled all the way through the ice and into the mud. They found that the geothermal gradient was about 200℃, which is several times the global average on continents. Few predicted this result, although it had been showed that the earth below the West Antarctic ice is unusually hot.
Even with the new discovery, though, we still don’t know exactly where the heat is coming from. One interesting possibility is volcanoes, which are under the ice. As recently as 2013, scientists were still discovering volcanoes under the ice in the area, and there may be many more.
Some people say that these volcanoes, rather than manmade climate change, are responsible for melting the area’s ice. While it’s true that heat coming from within the earth, including heat related to volcanoes, makes the melting faster, it is just one contributor to the loss of the West Antarctic ice sheet---not the main cause. Today’s study could help us understand how the whole system, including global warming, is melting the ice.
1.What’s happening to the West Antarctic ice sheet?
A. The ice sheet is getting hotter and hotter.
B. It is heated from below rather than from above.
C. The ice sheet is producing a new kind of energy.
D. It is melting from both sides.
2.What can be learned from the second Paragraph?
A. It was the first time that researchers had tried to measure geothermal gradients.
B. The geothermal gradient showed where the heat came from.
C. The result was beyond the researchers’ expectations.
D. Researchers never knew the earth under the West Antarctic ice was hot.
3.The author would probably agree that ___.
A. the new discovery is unhelpful without a certain conclusion
B. no volcano has been found to support the researchers’ idea
C. volcanoes are the most important reason for the melting of the ice
D. global warming is surely one reason for the melting of the ice
4.What’s the main idea of the passage?
A. The West Antarctic ice sheet is in danger.
B. Researchers are trying to stop global warming.
C. The West Antarctic ice sheet’s melting will bring terrible consequences.
D. It has been known how to stop the melting of the West Antarctic ice sheet.
