首页
登录
职称英语
Avian influenza (禽流感), or "bird flu", is an infectiousdisease of animals wa
Avian influenza (禽流感), or "bird flu", is an infectiousdisease of animals wa
游客
2024-06-08
20
管理
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. [br] 【S3】
选项
答案
cause → causes
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3625785.html
相关试题推荐
Whattopicisthepassagemainlyconcernedwith?[br]Theotherhigheranimalsf
[originaltext]Onewaythatscientistslearnaboutmanisbyanimals,sucha
[originaltext]Onewaythatscientistslearnaboutmanisbyanimals,sucha
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Onlythehardiestanimals__________(才能在严寒中生存).cansurvivetheseverecoldness
随机试题
Oneofthemajordifferencesbetweenmanandhisclosestlivingrelativeis,
[originaltext]W:(9)Youareon"JustOneThing"today.Dr.LawrenceRoseniswit
[originaltext]W:Hi.Howcanwehelpyoutoday?M:Yeah.I’dliketogetmyhai
患者,女,47岁。五心烦热,潮热盗汗,腰酸腿软,行走无力,舌质红,脉细。宜首选的
急性少尿可见于A.糖尿病患者 B.尿崩症患者 C.泌尿系感染患者 D.肾病
当代大学生施展才华、成就事业的舞台不应主要定位在 A.基层B.大城市 C.
A. B. C. D.
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
某市场牛肉的价格为8元/千克,需求量为300万千克,当价格上升到10元/千克时,
若其他条件相同,则( ),进行人力资本投资的合理性越强。A.人力资本投资后获得
最新回复
(
0
)