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
Avian influenza (禽流感), or "bird flu", is an infectious disease of animals was caused by viruses that normally infect
Avian influenza (禽流感), or "bird flu", is an infectious disease of animals was caused by viruses that normally infect
admin
2010-04-30
32
问题
Avian influenza (禽流感), or "bird flu", is an infectious
disease of animals was caused by viruses that normally infect 【S1】______
only birds and, less commonly, pigs. Avian influenza viruses are
highly species-specific, but have, on rare occasions, crossed the
species barrier to infecting humans. 【S2】______
In domestic poultry (家禽), infection with avian influenza
viruses cause two main forms of disease, distinguished by 【S3】______
low and high extremes of virulence (毒性). The so-called
"low pathogenic (病原的)" form commonly causes only mild
symptoms and may easily go undetected. The highly pathogenic
form is far more dramatic. It spreads very rapidly through
poultry flocks, causes disease affecting multiple external organs, 【S4】______
and has a mortality that can approach 100%, often within 48
hours.
Bird flu is not the same as SARS. Because their symptoms 【S5】______
are similar, SARS is caused by completely different viruses.
Influenza viruses also are more infectious and cannot be as
readily contained as SARS isolating people who have the 【S6】______
infection.
The current outbreak of bird flu is different from earlier
ones in that officials have been unable to contain its spread. An
outbreak in 1997 in Hong Kong was the first time the virus had
spread to people, but it was much more quickly contained. A
total of 18 people were hospitalized with six reporting deaths. 【S7】______
About 1.5 million chickens were killed by an effort to remove 【S8】______
the source of the virus.
Unlike the 1997 scare, this outbreak has spread more rapidly
to other countries, increasing its exposure on people in varied 【S9】______
locations and raised the likelihood that the strain will combine 【S10】______
with a human influenza virus.
【S1】
选项
答案
was → /
解析
转载请注明原文地址:https://kaotiyun.com/show/pgOK777K
0
大学英语六级
相关试题推荐
Iwokeuplateyesterdaymorning.______(更槽的是,我的车坏了).
Sports,inshort,areakindofeducation,whichcanteachimportantlifeskillsthatcan’tbelearnedinschool.Onereasonth
A、Shedoesn’tliketeaalthoughit’sgoodforherhealth.B、Shelikestodrinkteaforitsgoodtaste.C、Shelikesbeefforits
A、Becauseshebelievedeggswerenotveryexpensiveandalsocontainedalotofprotein.B、Becauseshethoughtherheartwasstr
Alltheworld’smostsuccessfulCEOshavetoomuchtodoandtoolittletimetohavetheirpersonallife.Accordingtothepass
A、Smallarea,smallpopulation.B、Smallarea,largepopulation.C、Largearea,smallpopulation.D、Largearea,largepopulation.
RiversByoriginalusage,ariverisflowingwaterinachannelwithdefinedbanks.Modernusageincludesriversthataremul
A、Betteringhiswayoflife.B、Improvinghissurroundings.C、Modifyingthefaceoftheplanet.D、Alteringthephysicalfeatures
Whatistheonehugeproblemthatwehaven’treallysolved?Scientistsandenvironmentaliststhinkthatglobalwarmingcanbe_
Theresultofautomationmaywellbeanincreaseinemployment,sinceitisexpectedthatvastindustrieswillgrowuparoundma
随机试题
(2020年临沂)在课堂教学评价时,如果我们关注的重点是学生对学习内容的掌握程度,学生是否达到了教学目标的要求,应尽量采用()
A.单疱病毒性角膜炎B.绿脓杆菌性角膜炎C.匍行性角膜炎D.真菌性角膜炎E.蚕蚀性角膜溃疡角膜出现树枝状或地图状溃疡
关于非参数秩和检验,以下错误的一项是
住宅楼带洗浴的卫生间内电源插座安装高度不低于1.5m时,可采用()。
下列各项中,不属于贷款发放的三个原则的是()。
违反治安管理行为人主观上必须有违反治安管理的故意或过失的心理态度,否则其行为不构成违反治安管理行为。()
一3,3,0,(),3,6。
哥白尼的“太阳中心说”并非真正科学,但他的巨大进步意义在于()。
胡锦涛在2006年7月召开的全国统战工作会议上指出,平等、团结、互助、和谐的社会主义民族关系,体现了中华民族多元一体的基本格局,体现了中华民族大家庭的根本利益。其中,关于平等、团结、互助、和谐对于社会主义民族关系的功能,以下表述正确的有()。
Writeanessaybasedonthechart.Inyourwriting,youshould1)describethediagram,and2)giveyourcomments.Youshould
最新回复
(
0
)