首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Getting a cold or catching the flu is a common complaint for people every year. In fact, people usually catch between two and fi
Getting a cold or catching the flu is a common complaint for people every year. In fact, people usually catch between two and fi
admin
2019-02-25
25
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.
选项
答案
severe limitation
解析
(该句意思为“虽然鼻病毒占所有感冒病毒的近40%,但旨在研究治疗方法的BIRR4项目由于其严重的限制性而失败”。根据第四段原文“As a possible treatment for a cold,it was severely limited and so in 2000,Boehringe dropped the BIRR4 project”可知,该研究有严重的限制性。因此该空应填人severe limitation。)
转载请注明原文地址:https://kaotiyun.com/show/st8K777K
本试题收录于:
B类竞赛(英语专业本科专科)题库大学生英语竞赛(NECCS)分类
0
B类竞赛(英语专业本科专科)
大学生英语竞赛(NECCS)
相关试题推荐
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【D1】______ChristopherColumbus.Hethoughthe
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【D1】______ChristopherColumbus.Hethoughthe
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【D1】______ChristopherColumbus.Hethoughthe
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【D1】______ChristopherColumbus.Hethoughthe
Althoughfewwoulddenythatit’sbettertoberichthanpoor,forsomepeoplethequestformoneyissoall-consumingthatite
—Martinwouldbemuchwisertostayinthecountryforanotheryearandfinishhismaster’sdegreethantorushhomeandtakeo
TheolderNewEnglandvillageshavechangedrelativelylittle______agasstationortwoinrecentdecades.
Everymaninthiscountryhastherighttolivewherehewantsto______thecolorofhisskin.
WhatwasregardedasthelifebloodofthecountryoftheMaldives?
随机试题
有关心脏大血管MRI技术的叙述错误的是
“十二五”期间,全国特种设备继续保持快速增长态势,其中电梯数量占到了特种设备总数的7成,某市特种设备安全监督管理部门对车站、商场、医院等公共场所的电梯实施了重点安全监督检查。在特种设备安全监管部门依法履行监督检查职责时,下列做法错误是(
项目各年净现金流量如下表所示,设基准投资收益率是10%,其动态投资回收期是( )年。
7月113,某投资者以100点的权利金买入一张9月份到期,执行价格为10200点的恒生指数看跌期权,同时,他又以120点的权利金卖出一张9月份到期,执行价格为10000点的恒生指数看跌期权。那么该投资者的最大可能盈利(不考虑其他费用)是()。
股份支付协议生效后,对其条款和条件的修改,下列说法正确的有()。
某普通合伙企业2010年成立,张某于2011年提出入伙,如果原合伙协议没有相关的约定,下列表述中,不正确的是()。
根据现场目击者提供的线索,公安机关绘制了如下犯罪嫌疑人头像。下列选项中,可能是同一犯罪嫌疑人头像的有()。
矛盾存在于一切事物中,并贯穿于每一事物发展过程的始终。()
为进一步加强对不遵守交通信号等违法行为的执法管理,规范执法程序,确保执法公正,某市交警支队要求:凡属交通信号指示不一致、有证据证明救助危难等情形,一律不得录入道路交通违法信息系统;对已录入信息系统的交通违法记录,必须完善异议受理、核查、处理等工作规范,最大
TheBushmenare______hunterseventhoughtheirweaponsareprimitive.
最新回复
(
0
)