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
72
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
【S5】
选项
答案
F
解析
contact接触。
转载请注明原文地址:https://kaotiyun.com/show/kzN7777K
0
大学英语四级
相关试题推荐
GallaudetUniversitycurrentlydoesnotallowstudentstokeeppetsintheirdormrooms.Exceptionsaremadeonlyforservicean
GallaudetUniversitycurrentlydoesnotallowstudentstokeeppetsintheirdormrooms.Exceptionsaremadeonlyforservicean
Thediscoverythatlanguagecanbeabarriertocommunicationisquicklymadebyallwhotravel,study,governorsell.Whether
Forthispart,youareallowed30minutestowriteacompositiononthetopicofKeepingPets.Youshouldwriteatleast120wor
A、Shedidn’tlikeit.B、ShethoughtitwasbetterthanMrWhite’s.C、ShethoughtitwasnotasgoodasMrWhite’s.D、Shethought
LoveAroundtheWorldItwasanunsettingnightattheAfricanbarandRichardBlaine,37,wasespeciallynervous.Clients
EmploymentinJapanRecruitingseason:who,whenandwhereEveryautumn,whenrecruitmentofnewgraduatesandschool
Nextyear,ifallgoesasplanned,thelargestmakerofpersonalcomputersinAsiawillbecomethethirdlargestintheworld.
A、Goingtoseethemovietogether.B、Waitingforthemanatthedoor.C、Tryingtosellthetickettootherpeople.D、Leavingthe
Internetvotinghappensallthetime,butusuallyit’sconfinedtotopicssuchas"WhoisthecutesteastmemberofPartyofFiv
随机试题
破伤风的潜伏期平均为()
某企业总资产为2000万元,其中流动资产500万元,存货100万元,负债200万元,流动负债100万元,则其流动比率为()。
会计凭证有哪些作用?
可用来判断现象之间相关方向的指标有()。
随着我国国民经济的发展,人民生活水平显著提高,百姓健康水平不断提高,60岁以上老年人口有较大增长,人口老龄化问题凸显。2015年,我国老龄人口达到3亿多,老龄社会和养老问题成为备受社会关注的焦点。在2010年、2014年的全国人民代表大会上,代表
我国地方各级人民政府是地方各级人民代表大会的执行机关,其每届任期与本级人民代表大会任期相同。下列各级人民政府中每届任期为3年的是()。
教室:自习
给定资料1.中国人讲究礼尚往来,逢年过节来往走动,互赠礼物,互祝安康,也是美好情谊的表达。特别是在结婚这样的喜事上更是讲究礼尚往来。操办婚礼无可厚非,但是动辄十几万甚至几十万的彩礼、几百几千的份子钱,亲朋好友连吃多天的婚宴酒席等大操大办、铺张浪费的不良风
Lookatthenotebelow.Youwillhearawomancallingaboutthearrangementsforameeting.TELEPHONEMESSAGEFor:JohnFitzgera
Thereisabeliefamongmanyeducatorsthatstudentattentionpeaksduringthefirst15minutesofclassroominstruction—a(n)(1)
最新回复
(
0
)