首页
登录
职称英语
Recently, the news has been filled with reports of the "bird flu." Asia is o
Recently, the news has been filled with reports of the "bird flu." Asia is o
游客
2024-02-23
35
管理
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. [br] 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://tihaiku.com/zcyy/3474798.html
相关试题推荐
Recently,thenewshasbeenfilledwithreportsofthe"birdflu."Asiaiso
[originaltext]AmotherinTamilNadu,India,recentlyhadaquestionforou
[originaltext]W:Whathaveyoubeenuptorecently?M:Burningthemidnightoil
Theheatingsystemhasrecentlybeen______tomakeitmoreefficient.A、modified
Recentlytheyoungcoupleshave______argumentswitheachotherfortrifles.A、c
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywi
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywi
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywi
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywi
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywi
随机试题
Itisacommonplaceamongmoraliststhatyoucannotgethappinessbypursuin
Twelveyearsago,asafirst-yearlanguage-artsteacheratamiddleschooli
Itisirenicthatamanwithsuchadecentdressandgracefulmannerbeagangst
某弱碱性药物pKa=9.8,如果降低尿液的pH,则此药在尿液中()。A.解
教师提供适合的材料、教具、环境,让幼儿自己摆弄,实践过程中进行探索,获得教学感性
一个投资组合风险大于平均市场风险,则它的β值可能为()。A:0.3 B:0.9
按照物流的()划分,可以分为供应物流、销售物流、生产物流、回收物流和废弃物物流。
工程监理单位在工程设计过程中(提出报告时),应审查设计单位提出的新材料、新工艺、
患者男,35岁。腹部被重物撞击3小时。入院时查体、化验、X线透视及腹穿未明确诊断
甲公司与乙租赁公司约定,由乙公司从甲公司指定的丙厂家购买一套M03型电子配料
最新回复
(
0
)