单选题

Common-Cold Sense

You can"t beat it, but you don"t have to join it. Maybe it got the name "common cold" because it"s more common in winter. The fact is, though, being cold doesn"t have anything to do with getting one. Colds are caused by the spread of rhinoviruses, and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one.
Children are the most common way cold viruses are spread to adults, because they have more colds than adults an average of about eight per year. Why do kids seem so much more easily to get colds than their parents? Simple. They haven"t had the opportunity to become immune to many cold viruses.
There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it—but only it.
Colds are usually spread by direct contact, not sneezing or coughing. From another person"s hand to your hand and then to your nose or eyes is the most common route. The highest concentration of cold viruses anywhere is found under the thumbnails of a boy, although the viruses can survive for hours on skin or other smooth surfaces.
Hygiene is your best defense. Wash your hands frequently, preferably with a disinfectant soap, especially when children in your household have colds.
But even careful hygiene won"t ward off every cold. So, what works when a coughing, sneezing, runny nose strikes?
The old prescription of two aspirins, lots of water, and bed rest is a good place to start. But you"ll also find some of the folk remedies worth trying. Hot mixtures of sugar(or honey), lemon, and water have real benefits.

单选题 According to the essay, you may have a cold because ______.

【正确答案】 B

【答案解析】[解析] 根据文章第一段最后一句前半句“Colds are caused by the spread of rhinoviruses ...”可知，感冒是由鼻病毒引起的，所以B项正确。根据本段第三句“... being cold doesn"t have anything to do with getting one”可知，受凉并不会导致感冒，所以A项错误。根据文章第四段第一句“Colds ... spread by direct contact, not sneezing or coughing.”可知，感冒通常是通过直接接触传染的，而不是通过打喷嚏或咳嗽，所以C项错误。而D项内容与感冒没有关系。故本题选B。

单选题 The best way to keep yourself from getting colds is ______.

【正确答案】 A

【答案解析】[解析] 根据文章第五段第一、二句“Hygiene is your best defense. Wash your hands frequently ...”可知，保持卫生是最好的预防方法：经常用消毒肥皂洗手，尤其是当家里有小孩患感冒时。所以A项正确，而B项不够全面。根据第七段第一句“The old prescription of two aspirins, lots of water, and bed rest ...”可知，感冒后服两片阿司匹林，喝大量的水，睡一觉，这种老方法是很有效的，所以D项是感冒后的治疗方法，而不是预防方法。文章没有涉及一天的服药量，C项内容属于无中生有。故本题选A。

单选题 Children have more colds because ______.

【正确答案】 B

【答案解析】[解析] 根据文章第二段最后一句“They haven"t had the opportunity to become immune to many cold viruses.”可知，儿童不可能对多种感冒病毒都具有免疫能力，所以B项正确。A项叙述了儿童平均一年的感冒次数，但这不是他们感冒的原因，所以A项错误。C项和D项内容文章没有涉及。故本题选B。