首页
登录
职称英语
[img]2018m11s/ct_eyyjsbz2017c_eyyjsbreada_0027_201809[/img] Getting a cold or
[img]2018m11s/ct_eyyjsbz2017c_eyyjsbreada_0027_201809[/img] Getting a cold or
游客
2023-10-15
51
管理
问题
Getting a cold or catching the flu is a common complaint for people every year. In fact, people usually catch between two and five colds each year. No one enjoys the accompanying symptoms: the sore throat, running nose, constant sneezing and headaches. Unsurprisingly, cold medication has become a big business. People spend billions of dollars to combat this recurring problem. We see the number and variety of over-the-counter medicines each time we enter a pharmacy. Is a cure for the common cold possible? The answer seems to be both yes and no.
First of all, the common cold itself is not a single disease. Any of two hundred different viruses could be responsible for the symptoms of a cold. Developing a vaccine for the common cold would literally mean having to develop hundreds of vaccines.
Additionally, some cold viruses have the ability to change their molecular appearance. Thus, even though our body may become immune to a certain cold virus this winter, by next winter our antibodies will probably not recognize it.
However, one family of viruses, the rhinoviruses, seems to account for almost 40% of all colds. Therefore, scientists have been focusing their research on this family of virus es in the hopes that treatments targeting rhinoviruses will result in a drastic decrease in the number of colds people get. In the late 1990s, researches experienced some initial success. Biologists developed a treatment, an anti-viral molecule called BIRR4, which prevented the binding of the virus to cells in the nose. This binding is an essential first step to start a viral infection and, were it preventable, many of the infectiors would be bypassed. For the next few years, the Pharmaceutical giant Boehringer tried to make this treatment commercially viable. Unfortunately, they found to their dismay that this treatment only worked just prior to getting a cold or in the first stages of infection when most people do not yet realize anything is wrong. As a possible treatment for a cold, it was severely limited and so in 2000, Boehringe dropped the BIRR4 project.
Another difficulty in finding a cure for the common cold is that the cold virus does not actually cause our cold symptoms. Indeed, by the time we start to show cold symptoms, the viral infection is almost over. Most infections result in no symptoms at all. The symptoms that we get from a cold are, in reality, produced by our body’s immune response, not by the virus itself. Thus, some scientists are now suggesting targeting the body’s immune responses rather than the virus itself, as we do when we treat allergies. One medical researcher suggests that in order to find a cure for colds we must weaken our immune system’s response. Through a cocktail of certain drugs-interferon, ibupro-fen and chlorpheniramine-cold sufferers would be able to decrease the anti-inflammatory part of the immune response and get rid of their symptoms, while still allowing their body to fight off the remaining viral infection. Ibuprofen and chlorpheniramine are both inexpensive and available over the counter. Unfortunately, however, a single dose of interferon is about $ 200 and is as yet unavailable in large over-the-counter quantities.
Though at times it seemed that a cure was already tantalizingly close, this process of infection and our body’s response to it is clearly more complicated than previously guessed. Undoubtedly, the search for a cure for the common cold will continue. What form this eventual cure will take, though, is anyone’s guess.
Questions 56 to 60
Complete the table using no more than three words for each blank.
[br]
选项
答案
Symptoms
解析
(根据后面的“Sore throat,running nose,constant sneezing and headaches”等可知答案在第一段,描述的是感冒的症状。表格中第一列所有单词的首字母都大写。因此该空应填人Symptoms。)
转载请注明原文地址:https://tihaiku.com/zcyy/3098786.html
相关试题推荐
Doyoufindgettingupinthemorningsodifficultthatit’spainful?Thism
Doyoufindgettingupinthemorningsodifficultthatit’spainful?Thism
Themanagementofthecompanyisgettingworsebecausetheregulationsarenot__
Chancesofgettingthejobwereslim,sotheyoungmanfelt______aboutthefutur
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthings
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthings
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthings
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthings
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthings
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthings
随机试题
TheLiYuchunphenomena,however,goesfarbeyondher【S1】_
GlobalWarming:Causes,EffectsandSolutionsW
Inmanycountries,suchasFrance,Greece,andJapan,itisoftenmorediffi
DoIhaveFreeWill?AfterconsideringtheevidenceforthethreeviewsIha
组织行为学所具有的学科性质有()A.边缘性 B.系统性 C.两重性 D.
根据《危险化学品重大危险源辨识》中规定,危化品的危险性分级与危险控制程度分析用作
《净稳定资金比例披露标准》规定,从()起,银行应定期在财务报告中或银行网站公
关于子宫内膜的周期性变化,下列说法中不正确的是A、增生期早期腺上皮呈正方形或低柱
A.蒲黄 B.地榆 C.羊蹄 D.侧柏叶 E.小蓟宜治下焦血热所致出血证
请从所给的四个选项中,选出最恰当的一项填入问号处,使之呈现一定的规律。 A.如
最新回复
(
0
)