6．The common cold is the world's most widespread illness，which is probably why there are more myths about it than any of the other illnesses．
The most widespread mistake of all is that colds are caused by cold．They are not．They are caused by viruses passing on from person to person．You catch a cold by coming into contact，directly or indirectly，with someone who already has one．If cold causes colds，it would be reasonable to expect the Eskimos to suffer from them forever．But they do not．And in distant and isolated Arctic regions explorers have reposed being free from colds until coming into contact again with infected（感染的）people from the outside world by way of packages and mail dropped from airplanes．
At the Common Cold Research Unit in England，volunteers took part in experiments in which they gave themselves to the discomforts of being cold and wet for long periods of time．After taking hot baths，they put on bathing suits，allowed themselves to be doused（浸入）with cold water，and then stood about dripping wet in drafty（通风的）room．Some wore wet socks all day while others exercised in the rain until close to complete tiredness．Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose．
If，then，cold and wet have nothing to do with catching colds，why are they more frequent in the winter？Despite the most pains--taking research，no one has yet found the answer．One explanation offered by scientists is that people are more likely to stay together indoors in cold weather than at other times，and this makes it easier for cold viruses to be passed on．
No one has yet found a cure for the cold．There are drugs and pain suppressors（止痛片） such as aspirin，but all they do is to relieve the symptoms．
29．The fact that the Eskimos don't suffer colds shows thatD．
A．colds are really full of myths．
B．viruses are the factors causing colds．
C．colds are more serious than other illnesses．
D．the idea that cold leads to colds doesn't stand up．
30．The experiments mentioned in Paragraph 3made it clear thatA．
A．it was viruses not wet and cold that made people have colds．
B．taking hot baths made the volunteers easy to be tired．
C．being doused with cold water did harm to one's body．
D．people who would like to exercise in the rain got colds more easily．
31．According to the passage，colds are commonly seen in winter becauseA．
A．staying together indoors makes it easier for viruses to pass on．
B．viruses can go into people's warm bodies more easily in winter．
C．there is great difference between indoor and outdoor temperature．
D．People are usually weak because of the extreme cold in winter
32．The passage mainly discussesC．
A．the experiments on colds．
B．the myths about colds．
C．the reason and the way people catch colds．
D．the continued spread of common colds．
分析 本文是一篇说明文．主要分析了感冒不是由于寒冷和潮湿引起的而是由于病毒的传染所引起的．文章列举了多个事例来证明这一点如：北极的科考队员、奥斯维辛集中营里的人及被置于潮湿和寒冷的环境下参与实验的志愿者们．冬天易得感冒的可能原因是冬天大多数时间人们都呆在家里，增加了病毒传染的机会．
解答 29-32．DAAC
29题答案：D考查细节推理，根据文章第二段的If cold causes colds，it would be reasonable to expect the Eskimos to suffer from them forever．But they do not．如果寒冷导致了感冒，那么爱斯基摩人永远都会遭受感冒这一点是合理的，但是他们并不这样．可知爱斯基摩人不遭受感冒的事实说明了"寒冷导致感冒的观点站不住脚"，故本题答案为D选项．
30题答案：A考查细节推理，根据文章第三段最后一句话Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose．
这些志愿者中没有一个人因为患感冒而倒下除非感冒病毒进入他的鼻子．可知本段表明了"是病毒而非寒冷和潮湿导致了感冒"，故本题答案为A选项．
31题答案：A根据文章倒数第二段的One explanation offered by scientists is that people are more likely to stay together indoors in cold weather than at other times，and this makes it easier for cold viruses to be passed on．科学家提供的一种解释是在寒冷的天气人们更有可能比其它时候一起待在室内，这使得感冒病毒更容易传染．可知本题答案为A选项．
32题答案：C考查主旨大意，文章主要讨论了人们真正感冒的原因及途径；故本题答案为C选项．
点评 本文是一篇科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对 性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．
