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
Recently, the news has been filled with reports of the "bird flu." Asia is on a region-wide health aleft, with governments slaug
Recently, the news has been filled with reports of the "bird flu." Asia is on a region-wide health aleft, with governments slaug
admin
2010-10-14
55
问题
Recently, the news has been filled with reports of the "bird flu." Asia is on a region-wide health aleft, with governments slaughtering millions of chickens to contain outbreaks of the bird flu in Thailand, Vietnam, Cambodia, South Korea, Japan and China.
Influenza -- commonly called "flu" -- is one of the oldest and most common diseases known to man. It can also be one of the deadliest. The great "Spanish flu" pandemic(传染病)of 1918-1919 was considered the worst plague in history, killing up to 40 million people with half of the world’s population infected in only a few months.
Influenza can also infect many different warm-blooded animals, such as birds. However, the "flu" virus usually develops different variants that are specialized for each species of animal that they infect. Cross species infections are rare.
A flu strain called influenza A(H5N1)appears to have made a successful jump from birds to humans. The viral strain(病毒株)was first isolated from South African birds in 1961. The first known human infection occurred in a Hong Kong child in May of 1997. By the end of 1997, there were 13 confirmed cases and four deaths, all in Hong Kong. In an attempt to stop the spread of the disease, the government of Hong Kong ordered the slaughter of all chickens, ducks, geese, and domestic pigeons.
Human infected with H5N1 so far are thought to have caught the disease from fowl and no person-to-person transmissions have been reported. The World Health Organization, however, fears that the bird flu is highly adaptable and might leap the species barrier. It says anyone exposed to the disease should be quarantined(隔离)to avoid contact with sufferers of regular human influenza.
It has been discovered that ______.
选项
A、H5N1 does not transmit among human beings
B、bird flu spreads only among birds
C、H5N1 is a variant of flu virus
D、bird flu adapts easily to other species
答案
C
解析
此题考查对有关H5N1细节的理解。根据第三和第四段得知C)是答案。特别注意A),虽然最后一段提到no person-to-person transmissions have been reported,但由此不一定就能得出H5N1 does not transmit among human beings的结论。
转载请注明原文地址:https://kaotiyun.com/show/Q787777K
0
大学英语四级
相关试题推荐
A、Tobuildanextensiontothehouse.B、ToputadeviceonPaul’swheelchair.C、Tostartabusinessonhousealterationsfordis
A、Teacherandstudent.B、Doctorandpatient.C、Managerandofficeworker.D、Travelagentandcustomer.C女士询问男士自己能否可能下个月早点的时候去度假,
Inventchallenges.Ahundredyearsago,pioneerpsychologistWilliamJamesdeclaredthathumansuseonlya【C1】______partofthei
A、AskJoantocometothemeetingbeforelunch.B、TellJoanatlunchaboutthemeeting.C、CallJoantomeetherforlunch.D、Mee
A、Heprefersstayingathomebecausethebusistoolate.B、Heprefersstayingathomebecausehedoesn’tliketotravel.C、Hep
Troubledbythepersistentlypoorgraduationratesofbasketballandfootballplayers,theNationalCollegiateAthleticAssociat
A、Becausethedogdidn’tappearanylonger.B、BecauseAlbertcouldn’taffordthechocolateanylonger.C、BecauseAlbertdidn’tl
A、Hefeelsfunny.B、Hefeelsangry.C、Hefeelsexcited.D、Hefeelssad.C本题关键句为“Isittruethatyouwillfeelveryexcitedandh
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notontheEarth,butintheSun;in【C1】______attheSun’sver
A、Theworkerandhiswifeweretalkinginafriendlyway.B、Theworkerwasgettingintohiscar.C、Theworkerstoppedtalking.D
随机试题
在工艺管架中管路采用U型管的目的是()。
ADreamoftheRedMansionissaid______intodozensoflanguagesinthelastdecade.
易风化药物可使胶囊壳
监理单位为完成监理任务所需要的工程资料,应当( )。
生产经营单位使用的涉及生命安全、危险性较大的特种设备,以及危险物品的容器、运输工具在投入使用前,不需要符合以下哪个条件。( )
通俗历史读物的健康发展,不仅是史学工作者的_______,也是出版传媒工作者肩上的重任,需要多方互相协作、共同努力,让历史不仅仅是一门象牙塔中的高深学问,更成为滋养民族心灵、让更多人读史以明智的知识_______。依次填入画横线部分最恰当的一项是(
简述贞观之治。
马克思、恩格斯批判地继承了前人的成果,实现了人类思想史上的伟大革命。马克思1845年春天写的《关于费尔巴哈的提纲》和马克思、恩格斯1844~1846年合写的《德意志意识形态》,标志着马克思主义的基本形成;1847年《哲学的贫困》和1848年2月《共产党宣言
Writeanessayof160—200wordsbasedonthefollowingpicture.Inyouressay,youshould1)describethepicturebriefly,
对下列二叉树进行前序遍历的结果是()。
最新回复
(
0
)