第一篇：The common cold is the world's most widespread illness, which is plagues thatflesh receives. The most widespread fallacy（谬误）of all is that colds caused by cold.They are not. They are caused by viruses （病毒）passing on from person to person.You catch a cold by coming into contact, directly or indirectly, with someone whoalready has one. If cold causes colds, it would be reasonable to expect the Eskimos tosuffer from them forever. But they do not. And in isolated arctic regions explorershave reported being free from colds until coming into contact again with infectedpeople from the outside world by way of packages and mail dropped from airplanes.During the First World War soldiers who spent long periods in the trenches （战壕）,cold and wet, showed no increased tendency to catch colds. In the Second World Warprisoners at the notorious Auschwitz concentration camp（奥斯维辛集中营）, nakedand starving, were astonished to find that they seldom had colds. At the CommonCold Research Unit in England, volunteers took part in Experiments in which theygave themselves to the discomforts of being cold and wet for long stretches of time.After taking hot baths, they put on bathing suits, allowed themselves to be with coldwater， and then stood about dripping wet in drafty room. Some wore wet socks allday while others exercised in the rain until close to exhaustion. Not one of thevolunteers came down with a cold unless a cold virus was actually dropped in hisnose. If， then， cold and wet have nothing to do with catching colds, why are theymore frequent in the winter? Despite the most pains-taking research, no one has yetfound the answer. One explanation offered by scientists is that people tend to...
