Question

3．AIDS researchers say they still have much work to do on a vaccine （疫苗）against HIV．But the first reports of some success have raised hopes．（33）C 
The study was designed to test for two abilities．One was the ability of the vaccine to prevent HIV infections．The other was its ability to reduce the amount of virus in the blood of people who became infected during the study．
Volunteers received vaccinations over a period of six months and were tested for HIV for an additional three years．The study began in 2003．It was the largest AIDS vaccine trial yet．（34）F    Half received the vaccine．The other half received a placeho，an inactive substance （物質）．The volunteers did not know which they were getting．
Seventy-four people in the placeho group became infected during the study．（35）D  Doctor Supachai Rerks-Ngarm，who led the study for the Thai Ministry of Public Health，called it a scientific breakthrough．
The National Institutes of Health also took part．Doctor Anthony Fauci at NIH called the findings an important step forward．（36）G But he also said additional research was needed to better understand how the vaccine reduced the risk in those individuals．
The vaccine did not lower the amount of virus in the blood of volunteers who became infected during the study．The study was based on versions of HIV commonly found in Thailand．The volunteers received a combination of two vaccines．（37）A  The second，or booster，vaccine was developed by VaxGen．The nonprofit group Global Solution for Infectious Diseases now has rights to it．
Neither vaccine had been successful by itself when tested earlier．More detailed results of the study are expected to be presented at an AIDS vaccine conference in Paris next month．

A．The first，or prime，vaccine came from the Sanofi Pasteur company．
B．The AIDS vaccine raises hopes for those who get infected and will defeat the disease thoroughly．
C．Scientists say an experimental vaccine reduced the risk of infection in humans by thirsty-one percent and was safe．
D．The researchers say that was compared with only fifty-one of those who received the vaccine．
E．AIDS is a very serious phenomenon in Thailand．
F．It involved more than sixteen thousand adults in Thailand．
G．He said it represented the first time an investigational HIV vaccine had shown some ability to prevent infection．

Answer 1

分析 本文講到艾滋病研究人員認為，關于對抗HIV的疫苗，他們仍然有許多工作要做．科學家說一種實驗性疫苗降低了人類感染的風險，是很安全的．之后對該疫苗進行了研究．

解答 CFDGA
33．C聯系下文題．根據后文The study was designed to test for two abilities．提到了一個實驗研究．C項：Scientists say an experimental vaccine reduced the risk of infection in humans by thirsty-one percent and was safe．科學家說一種實驗性疫苗降低了人類感染的風險，是很安全的．符合文意，故選C．
34．F語境辨析題．根據上文It was the largest AIDS vaccine trial yet．可知這是迄今為止規(guī)模最大的艾滋病疫苗試驗．F項：It involved more than sixteen thousand adults in Thailand．泰國有一萬六千多名成年人參與其中．符合文意，故選F．
35．D文章銜接題．根據上文Seventy-four people in the placeho group became infected during the study．可知研究期間，有74%的人被感染．D項：The researchers say that was compared with only fifty-one of those who received the vaccine．研究人員說，這是與接受疫苗的51%的人相比．符合文意，故選D．
36．G聯系下文題．根據下文But he also said additional research was needed to better understand how the vaccine reduced the risk in those individuals．可知但是他也說需要更多的研究來更好地了解疫苗是如何降低這些人的風險的．G項：He said it represented the first time an investigational HIV vaccine had shown some ability to prevent infection．他說，這是首次研究性HIV疫苗顯示了某種預防感染的能力．符合文意，故選G．
37．A文章銜接題．根據后文The second（第二種），or booster，…可知A項：The first，or prime，vaccine came from the Sanofi Pasteur company．第一種疫苗，或者是最早的疫苗來自賽諾菲-巴斯德公司．符合文意，故選A．

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