首页
登录
职称英语
Rabies is an ordinarily infectious disease of the central nervous system, cau
Rabies is an ordinarily infectious disease of the central nervous system, cau
游客
2023-12-18
7
管理
问题
Rabies is an ordinarily infectious disease of the central nervous system, caused by a virus and, as a rule, spread chiefly by domestic dogs and wild flesh-eating animals. Man and all warm-blooded animals are susceptible to rabies. The people of ancient Egypt, Greece and Rome ascribed rabies to evil spirits because ordinarily gently and friendly animals suddenly became vicious and violent without evident cause and, after a period of maniacal behaviour, became paralysed and died.
Experiments carried out in Europe in the early nineteenth century of injecting saliva from a rabid dog into a normal dog proved that the disease was infectious. Preventive steps, such as the destruction of stray dogs, were taken and by 1826 the disease was permanently eliminated in Norway, Sweden and Denmark. Though urban centres on the continent of Europe were cleared several times during the nineteenth century, they soon became reinfected since rabies was uncontrolled among wild animals.
During the early stages of the disease, a rabid animal is most dangerous because it appears normal and friendly, but it will bite at the slightest provocation. The virus is present in the sailvary glands(腺) and passes into the saliva so that the bite of the infected animal introduces the virus into a fresh wound. If no action is taken, the virus may become established in the central nervous system and finally attack the brain. The incubation(潜伏期) period varies from ten days to eight months or more, and the disease develops more quickly the nearer to the brain the wound is. Most infected dogs become restless, nervous, and irritable and vicious, then depressed and paralysed. With this type of rabies, the dog’s death is inevitable and usually occurs within three to five days after the onset of the symptoms.
Anti-rabies vaccine(疫苗) is widely used nowadays in two ways. Dogs may be given three-year protection against the disease by one powerful injection, while persons who have been bitten by rabid animals are given a course of daily injections over a week or ten days. The mortality rate from all types of bites from rabid animals has dropped from 9% to 0.5%. In rare cases, the vaccine will not prevent rabies in human beings because the virus produces the disease before the person’s body has time to build up enough resistance. Because of this, immediate vaccination is essential for anyone bitten by an animal observed acting strangely and the animal should be captured circumspectly, and examined professionally or destroyed. [br] Rabies is______.
选项
A、a disease which is infectious, caused by virus of dogs and wild flesh-eating animals
B、a disease caused by evil spirits
C、a disease spread by man and all warm-blooded animals
D、a disease causes animals to be vicious and violent
答案
A
解析
文章第一句可得出答案。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3285395.html
相关试题推荐
In2014,America’seducationsystemmarkedanimportantmilestone.Forthefi
Inadditiontothenationalsocialsecuritysystem,17specialpensionschem
【B1】[br]【B7】seen→understood前半句中express的宾语是thesystem,不可作seen的宾语,可改为understood。
Accordingtothepassage,thenewcollege-entrancesystemisdesignedto______.
Accordingtothepassage,thenewcollege-entrancesystemisdesignedto______.
isthecenterofBritishfinancingsystem.A、theBankofEnglandB、theBankofBr
Linguisticsuse______torefertotheabstractlinguisticsystemsharedbythe
Whichoneisnottrueaboutthemagistrate?[br]WhichoneisinthecentralIta
Itisn’texpectedtostartnibblingawayatcomputerdatasystemsuntilthed
Itisn’texpectedtostartnibblingawayatcomputerdatasystemsuntilthed
随机试题
[originaltext]W:Youareburningthecandleatbothends.Youshouldtakeabre
[originaltext]M:YouknowIwillbethemaintalkerintheclassroomdiscussion
以下关于监理专题会议的叙述中,正确的是:( )。A.监理专题会议不能由授权监理
2010年年底,全国高速公路里程为7.41万公里,居世界第二位,比“十一五”规划
男,35岁。间断性腹痛、腹泻3年,大便3~5次/天,多呈稀糊状附黏液,无脓血。平
A.疫毒攻心 B.肝阳化风 C.血虚动风 D.热极生风 E.阴虚动风新病
具有中枢性降压作用的抗高血压药物是A.哌唑嗪B.利血平C.可乐定D.卡托普利E.
人参皂苷Rg结构类型及理化性质有A.属羊毛脂甾烷型四环三萜皂苷 B.属达玛烷型
某工作网络计划中,N工作的最早开始时间和最早完成时间分别为第11天和第15天,最
关于冬期施工砌体工程的说法,正确的有( )。A.应编制冬期施工专项方案 B.
最新回复
(
0
)