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
The H5N1 virus does not usually infect humans. In 1997, however, the first case of【S1】______ from a bird to a human was seen du
The H5N1 virus does not usually infect humans. In 1997, however, the first case of【S1】______ from a bird to a human was seen du
admin
2010-06-01
82
问题
The H5N1 virus does not usually infect humans. In 1997, however, the first case of【S1】______ from a bird to a human was seen during an outbreak of bird flu in poultry in Hong Kong. The virus【S2】______ severe respiratory illness in 18 people, 6 of whom died. Since that time, there have been other cases of H5N1 infection among humans. Most recently, human cases of H5N1 infection have【S3】______ in Thailand, Vietnam and Cambodia during large H5N1 outbreaks in poultry. The death【S4】______ for these reported cases has been about 50 percent. Most of these cases occurred from【S5】______ with infected poultry or contaminated surfaces; however, it is thought that a few cases of human-to-human spread of H5N1 have occurred.
So far, spread of H5N1 virus from person to person has been【S6】______ and spread has not continued【S7】______ one person. However, because all influenza viruses have the ability to change, scientists are【S8】______ that the H5N1 virus could one day be able to infect humans and spread easily from one person to another. Because these viruses do not commonly infect humans, there is【S9】______ or no immune protection against them in the human population. If the H5N1 virus were able to infect people and spread easily from person to person, an "influenza pandemic" (worldwide outbreak of disease) could begin. No one can predict when a pandemic might occur. However, experts from around the world are watching the H5NI situation in Asia very【S10】______ and are preparing for the possibility that the virus may begin to spread more easily and widely from person to person.
A) number B) concerned C) caused D) over
E) spread F) contact G) beyond H) absent
I) forgotten J) little K) occurred L) slightly
M) rare N) closely O) rate
【S6】
选项
答案
M
解析
rare罕见的。
转载请注明原文地址:https://kaotiyun.com/show/tzN7777K
0
大学英语四级
相关试题推荐
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______tolivetogetherinsharedspace.However,intheUni
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______tolivetogetherinsharedspace.However,intheUni
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______tolivetogetherinsharedspace.However,intheUni
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______tolivetogetherinsharedspace.However,intheUni
Internetvotinghappensallthetime,butusuallyit’sconfinedtotopicssuchas"WhoisthecutesteastmemberofPartyofFiv
Internetvotinghappensallthetime,butusuallyit’sconfinedtotopicssuchas"WhoisthecutesteastmemberofPartyofFiv
Internetvotinghappensallthetime,butusuallyit’sconfinedtotopicssuchas"WhoisthecutesteastmemberofPartyofFiv
随机试题
通过项目的现金净流量来收回初始投资的现金所需要的时间是__________。
下述血栓中,哪种是白色血栓
对诊断困难的急性化脓性腹膜炎病例,应做哪项检查以协助明确诊断
A.温和灸B.温针灸C.无瘢痕灸D.雀啄灸E.温灸器灸将艾条燃着的一端与施灸部位并不固定在一定的距离,而是一上一下的移动施灸称为
【2015年广西.多选】下列属于教学过程本质说的有()。
重证据,重调查研究,严禁逼供信政策的意义有( )。
春秋战国时期的成语故事与故事中的主人公对应有误的一项是()。
对左眼和右眼分别呈现两个不同的刺激,此时会发生___________。
三个男同学:张华、王华和李华,和三位女同学:王婷、陈婷和赵婷,参加校运动会。可供选择的项目有:跳远、跳高、长跑。参加项目有以下规则:每人只能参加一个项目;凡是男同学参加的项目,就必须有女同学参加;凡是有女同学参加的项目,就必须有男同学参加;张华参加了跳远
TheEnglishlanguageexistsinaconditionofeverlastingdanger,itsAmericanbranchmostparticularly,assaultedasitisfrom
最新回复
(
0
)