阅读理解Dr. Jack M. Gwaltney, Jr. a professor at the University Of Virginia School Of Medicine infected six student volunteers with virus, the most mon cause of colds. A few days later, when they were coughing and sneezing, he gathered 37 more people and divided them into three groups. Group 1 members spent three days and nights in the same room with one of the infected students, separated by a screen so they couldn't touch one another. Group 2 sat around a table while an infected volunteer talked, coughed and sang to them. Group 3 held hands with an infected student for ten seconds, and then touched their own noses or eyes.Although most scientists at the time, the mid-70s, believed colds were spread by virus-laden droplets spread through the air when infected people coughed or sneezed, Gwaltney suspected physical contact might play an important role. Sure enough, of the 15 people who had touched a student volunteer, 11 became infected—pared with only one of those who had been sitting at the table, and none who had spent three days and nights together.The best evidence we have is that hand-to-hand contact is the most efficient way of transmitting virus, says Gwaltney. The study was one of a series that helped establish Gwaltney's reputation as a leading authority. Dr. Robert Couch says, It would not be inappropriate to call him Mr. Common Cold.When Gwaltney is asked how close scientists are to finding a cure, he replies: If you mean ‘get rid of’, I don't think we're going to be able to do that with cold viruses any time soon. But if you look in the dictionary, you'll see that 'cure' is explained as a successful treatment. And we're not just getting more effective at treating the symptoms (症状)—we're getting at the root cause too. 1.Dr. Jack M. Gwaltney conducted the experiment in order to__________.A.find out the most mon cause of coldsB.infect the student volunteerC.find out the role physical contact plays in the mon coldsD.find out the role virus-laden air plays in the infection of colds2.The result of the experiment shows that ___ plays an important role in the infection of colds.A.sneezing at the infected personB.touching the infected personC.sitting together with the infected personD.talking with the infected person3.Which of the following statements is TRUE according to the passage?A.Dr. Gwaltney was sure that hand-to-hand touch is the cause of the mon cold.B.Only one of the people who had spent three days and nights together became infected.C.Dr. Gwaltney conducted many an experiment as to the cause of colds.D.Dr. Gwaltney tested altogether 43 volunteers to see how they could develop colds.4.Mr. Common Cold is______.A.a newly-found virusB.a nickname (绰号) of respect to Dr. GwaltneyC.a method to cure coldsD.a way by which the other scientists laughed at Dr. Gwaltney5.When Dr. Gwaltney gives a reply in the end of the passage, he means that______.A.they have found the fundamental cause of coldsB.they have managed to wipe out the cold virusesC.they have meant to experiment moreD.they have made much progress in dealing with colds
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CBCBD解析文章介绍了Gwaltney对感冒的研究，发现身体接触是传播感冒的重要原因。1.推理题。根据第二段第2,3行Gwaltney suspected physical contact might play an important role.可知他做这个实验的目的就是为了研究身体接触是不是传染感冒的原因。2.推理题。根据第三段第一行The best evidence we have is that hand-to-hand contact is the most efficient way of transmitting virus可知身体接触在感冒传染中所起的作用很大。3.推理题。根据第三段第二行The study was one of a series that helped establish Gwaltney's reputation as a leading authority.这次的研究只是一系列的实验之一。那么C正确。4.推理题。根据第三段最后一句It would not be inappropriate to call him Mr. Common Cold.可知Mr. Common Cold是他的绰号，指他是一个研究普通感冒的人。5.推理题。根据最后一句And we're not just getting more effective at treating the symptoms (症状)—we're getting at the root cause too. 可知他们不仅仅能治疗感冒症状，而且还了解了感冒的根源。