首页
登录
职称英语
In 1957 a doctor in Singapore noticed that hospitals were treating an unusua
In 1957 a doctor in Singapore noticed that hospitals were treating an unusua
游客
2024-01-01
13
管理
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 in his hospital and 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 percent of the population had become 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 have 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 reports showed that the influenza outbreak started in China, probably in February 1957. By the middle 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 WHO and therefore does not report outbreaks of disease to it. Not until two months later, when travelers carded 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 on its way around the world. [br] Once an influenza outbreak is started, for its spread around the world takes about ______.
选项
A、a month
B、several months
C、a year
D、several years
答案
B
解析
推断题型见第五段第二、三句及第六、七句:各种各样的报告显示流感的爆发首先始于中国,发生的时间大约是在1957年的二月。到了三月中,这种流感已在全中国传播开来。……但直到两个月之后,旅游者将这种病毒带到香港,也就是从这里又传到了新加坡,这个疾病爆发的消息才传到了世界上。这时这种流感才在世界上传播开来。由此可推断此病在世界范围的传播用了大约几个月的时间,选项B为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3324984.html
相关试题推荐
Thefluoroscopemakes______formedicaldoctorstoviewasilhouetteofthebon
[audioFiles]audio_etoefz_007(20051)[/audioFiles]A、Herhometowndoctorworksat
ABecauseoftheirhighrateofpredation,BitisnotunusualforrabbitsCproduc
Inlargehospitalsandresearchcenters,modemmethodsoftherapyseemtofocus
Thepremisesareasspick-and-spanasanyhealthcentre.Butunusuallyforso
AfamilydoctorchargedtheNightHomeService(NHS)morethan£500,000in
AfamilydoctorchargedtheNightHomeService(NHS)morethan£500,000in
AfamilydoctorchargedtheNightHomeService(NHS)morethan£500,000in
AfamilydoctorchargedtheNightHomeService(NHS)morethan£500,000in
InHongKong,doctorsreportedthat,forunclearreasons,12recovered$ARSpati
随机试题
Theideaofafishbeingabletogenerateelectricitystrongenoughtolight
关于图示桁架指定杆件的内力绝对值的比较,正确的是( )。 A.N1<N2<N
某企业的内部审计师审计该企业炼钢车间的生产成本时发现,由于计算机错误,该炼铁车间
垂直渗透系数是指单位水力梯度下,垂直于土工织物平面流动的水的流速。()
索赔意向通知要简明扼要地说明()等方面的内容。A、索赔事件发生的时间、地点和情况
五苓散的功用是A.利水消肿,理气健脾B.温阳化饮,健脾利湿C.温阳健脾,行气利水
医疗机构配制制剂的批准部门是A:所在地县级药品监督管理部门 B:所在地市级药品
属于抗疱疹病毒药的是A.奥司他韦 B.阿昔洛韦 C.司他夫定 D.恩替卡韦
关于项目申请报告编制的说法,正确的有()。A.项目申请报告可以由企业自行编
河口一维潮平均水质模型不能忽略纵向离散项的原因,可解释为( )A.海水参与了混合
最新回复
(
0
)