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
In 1957, a doctor in Singapore noticed that hospitals were treating an unusual number of influenza-like cases. Influenza is some
In 1957, a doctor in Singapore noticed that hospitals were treating an unusual number of influenza-like cases. Influenza is some
admin
2013-05-29
36
问题
In 1957, a doctor in Singapore noticed that hospitals were treating an unusual number of influenza-like cases. Influenza is sometimes called "flu" or a "bad cold". He took samples from the throats of patients and in his hospital was able to find the virus of this influenza.
There are three main types of the influenza virus. The most important of these are type A and B, each of them having several subgroups. With the instruments at the hospital the doctor recognized that the outbreak was due to a virus in group A, but he did not know the subgroup. Then he reported the outbreak to the World Health Organization in Geneva. WHO published the important news alongside reports of a similar outbreak in Hong Kong, where about 15%-20% the population became ill.
As soon as the London doctors received the package of throat samples, doctors began the standard tests. They found that by reproducing itself with very high speed, the virus had grown more than a million times within two days. Continuing their careful tests, the doctors checked the effect of drugs against all the known subgroups of virus type A. None of them gave any protection. This, then, was something new, a new influenza virus, against which the people of the world had no help whatever.
Having found the virus they were working with, the two doctors now dropped it into the noses of some specially selected animals, which get influenza much as human beings do. In a short time, the usual signs of the disease appeared. These experiments proved that the new virus was easy to catch, but that it was not a killer. Scientists, like the general public, call it simply Asian flu.
The first discovery of the virus, however, was made in China before the disease had appeared in other countries. Various report showed that the influenza outbreak started in China, probably in February of 1957. By the middle of March it had spread all over China. The virus was found by Chinese doctors early in March. But China is not a member of the World Health Organization and therefore does not report outbreaks of disease to it. Not until two months later, when travellers, carried the virus into Hong Kong, from where it spread to Singapore, did the news of the outbreak reach the rest of the world. By this time it was well started on its way around the world.
Thereafter, WHO’s Weekly Reports described the steady spread of this great virus outbreak, which within four months swept through every continent.
The type of influenza discussed in this story ______.
选项
A、had been classified years before
B、could not be cured by any known drug
C、could be prevented from spreading
D、could not affect adults
答案
B
解析
由第三段“None of them gave any protection.This,…had no help whatever”可知,只有B符合文意。
转载请注明原文地址:https://kaotiyun.com/show/gbHO777K
0
研究生英语学位课统考(GET)
相关试题推荐
Forestfiresfrequentlythreatenhumanlivesandcausegreatpropertydamagetopeople______insouthernCalifornia.
Youcan______differentkindsofpeople,dictionariesorencyclopediatofindoutwhatyouwishtoknow.
Thesimpleactofsurrenderingatelephonenumbertoastoreclerkmaynotseemharmful—somuchsothatmanyconsumersdoitw
Thesimpleactofsurrenderingatelephonenumbertoastoreclerkmaynotseemharmful—somuchsothatmanyconsumersdoitw
Thethieves______thewastepaperallovertheroomwhiletheyweresearchingforthediamondring.
Mac’sclose______tohisbrothermadepeoplemistakethemforoneanother.
Averyimportantworldproblemistheincreasingnumberofpeoplewhoactuallyinhabitthisplanet.Thelimitedamountoflanda
Moreboysthangirlsarebornallovertheworld,butanewstudyhasfoundthatthecloserpeoplelivetotheequator(赤道),the
Nextweek,theEuropeanParliamentwilldebatestringentregulationofanumberofeffectivepesticides.Ifthisregulationisp
随机试题
有色溶液的浓度增加一倍时,其最大吸收峰的波长()。
连续流动的高压液体在绝热且不对外做功的情况下,通过节流阀急剧膨胀到低压的过程称为()。
邀请信:你是王东,想于8月5日星期三中午11:30邀请朋友黎明来吃午饭,并告知他自己的侄女Susan和叔叔John届时也来家中作客。饭后也许一起去卡拉OK唱歌。回复信:黎明给王东写了一封回复邀请的信。他感谢并接受王东的邀请决定8月5号(星期三)去王东
IntheUnitedStatesthemostpopularformoffolkdancingsincetheearlydayshasbeensquaredancing.Inearlytimes,whenme
腮腺黏液表皮样癌的超声特征是
某施工单位在外地承接了一工程的施工任务,并与建设单位签订了施工合同。该施工单位在工程所在地招募了一批劳务工,并与他们签订了劳动合同。在施工过程中,由于建设单位资金筹措困难而导致施工合同终止,则该施工单位( )。
衍生工具只要支付少量保证金或权利金就可以买入,这是衍生工具的()特点。
计算机系统中,各种数据和命令传输的公共通道称为()。
要想在过程Proc调用后返回形参x和y的变化结果,下列定义语句中正确的是
Someritualsofmoderndomesticlivingvarylittlethroughoutthedevelopedworld.Onesuchisthemunicipalrefusecollection,
最新回复
(
0
)