2009年6月英语六级阅读冲刺的倒计时倒数13天

　　A scientific panel convened by the World Health Organization recommended guidelines on Friday for doctors conducting clinical studies of SARS patients. The panel urged doctors to apply the guidelines in analyzing the masses of potentially useful information about various therapies that were collected in this years epidemic. Much of that information has not been published or analyzed.

　　It is a matter of urgency to get better analysis and review, said Dr. Simon Mardel, a WHO official who led the two-day meeting that ended on Friday. He said thousands of potential therapies and compounds had been tested so far as researchers try to determine treatments for SARS, or severe acute respiratory syndrome. We recognize that having no treatment for SARS is hindering our ability to control an epidemic in so many ways. He said.

　　In the epidemic earlier this year, various treatments, like drugs to fight the virus or strengthen the immune system, as well as traditional Chinese medicine, were delivered under emergency conditions, in widely different settings and countries to patients suffering from varying stages of the illness. Those conditionsgenerally without standardized measurements or controlled situationshave made it hard to interpret results.

　　Standard supportive therapy like nursing, and in severe cases the use of mechanical respiratorsto help patients breathe, is the mainstayof SARS care, and helped many patients survive. But doctors still do not know how best to treat SARS patients who have breathing difficulties. Dr. Mardel said. One method is invasive ventilation. A second method involves blowing oxygen into the lungs through a mask. Both carry the risk of transmitting the virus to hospital employees. Without proper analysis, the panel was unable to say definitively which treatment worked best, or which caused the most harm. There is a lack of shared information, Dr. Mardel said, noting that a lot of data have not been published.

　　The panel also agreed on guidelines that would allow doctors to conduct quick and safe clinical trials, a process that generally takes years to complete. The world Health Organization, a United Nations agency did not release the guidelines. Dr. Mardel said they were flexible because no one knew where, when and in what setting SARS would return. Experts in many countries have already listed the treatments they want to test, and the health agency is leaving these decisions to individual nations.

　　1. Guidelines recommended by the scientific panel can be used for _____.

　　A. gathering potentially useful information about various therapies collected

　　B. conducting clinical studies of SARS patients

　　C. determining treatment for SARS

　　D. publishing all the information about SARS

　　2. According to the passage, it is difficult to interpret the results of certain treatments for SARS because _____.

　　A. patients were in different countries

　　B. patients were given medicines in widely different settings

　　C. patients were at different stages of the illness

　　D. these conditions had no standardized measurements or controlled situations

　　3. According to doctors, the two methods to treat SARS patients who have breathing difficulties both _______.

　　A. carry the risk of infecting hospital employees

　　B. are effective in curing patients who have breathing difficulties

　　C. dont run the risk of transmitting the virus to hospital employees

　　D. prove to work effectively and cause no harm

　　4. According to a WHO official, Dr. Mardel, the guidelines were flexible because _____.

　　A. SARS would reemerge in poor countries

　　B. no one knew where, when and in what setting SARS would return

　　C. SARS would not appear in developed countries

　　D. no one knew whether SARS would return or not

　　5. Which of the following can be the best title of the passage?

　　A. SARS, a Dreadful Disease

　　B. No Good Methods to Treat SARS

　　C. SARS Will Return One Day

　　D. Health Panel Recommends New Guidelines on SARS

　　答案：

　　1. B 细节理解题。根据第一段第一句guidelinesfor doctors conducting clinical studies得出此结论。

　　2. D 细节理解题。根据第三段第二句。

　　3. A 细节理解题。根据第四段介绍的两种方法的评论Both carry the risk of transmitting the virus to hospital employees.可得出结论。

　　4. B 细节理解题。根据第五段Because引导的从句because no one knew where, when and in what setting SARS would return.可知。

　　5. D 主旨题。可根据排他法选出最佳答案。