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
40
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] 【S10】
选项
答案
raised → raising
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3009526.html
相关试题推荐
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
[originaltext]Someanimalsremainandstayactiveinthewinter.Theymust
Avianinfluenza(禽流感),or"birdflu",isaninfectiousdiseaseofanimalswa
随机试题
【S1】[br]【S9】B第三段的首句为这段的主题句,下文用Firstly,Secondly和Thirdly引出了学生从中学毕业后的选择。根据句法的分析,c
Twoyearsagothismonth,Doubledaypublishedahistoricalthrillerwithan
发现左侧舌缘溃疡一月余,迅速增大,进食困难,检查外形见图,颈部淋巴结肿大,最先考
A.高锰酸钾 B.阿托品 C.碳酸氢钠 D.氯解磷定 E.毛果芸香碱用于
关于沥青混凝土路面中封层作用的说法,正确的有()。A、封闭某一层,起保水、防水作
下列关于瘿痈的说法错误的是( )。A.发病前多无感冒、咽痛等病史 B.痛可牵
下列关于T3和T4代谢的叙述,哪一项是错误的A.20.%的T4与T3在肝内失活
下列情况,适合进行钢材期货卖出套期保值操作的有()。A.甲钢材经销商已按固定价
某项目釆用的基准收益率为12%,其基本方案的财务内部收益率为16.2%,现假设建
在借贷记账法下,负债类、所有者权益类的账户,期末是肯定有余额的。()
最新回复
(
0
)