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
2023-09-13
13
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] 【S7】
选项
答案
reporting → reported
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3009523.html
相关试题推荐
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
[originaltext]Someanimalsremainandstayactiveinthewinter.Theymust
[originaltext]Someanimalsremainandstayactiveinthewinter.Theymust
随机试题
Islanguage,likefood,abasichumanneedwithoutwhichachildatacritica
Shewantedtogoswimming,______.A、soherbrotherdidB、sodidherbrotherC、too
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
A.病原体被消灭或排出体外 B.隐性感染 C.潜在性感染 D.病原体携带状
患者,男性,16岁,诊断为再生障碍性贫血,病情危重,极度消瘦,不思饮食,需要插胃
行业分析的主要任务包括( )。 Ⅰ.预测行业的未来发展趋势,判断行业投资价值
市场需求调查是市场调查中最基本的内容,它主要包括( )。 A.消费需求量调
速度v、直径d、动力黏滞系数μ密度ρ组成的无量纲数可表达为()。A. B.
近期一项电脑市场调查显示:按照一品牌学生购买者占全部购买者的百分比计算,A,B两
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)