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
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] 【S2】
选项
答案
infecting → infect
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3625784.html
相关试题推荐
Everhearofthelemming(旅鼠)?Lemmingsarearcticrat-likeanimalswithave
[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
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
随机试题
ThereasonswhymostpeoplehavetroublesleepingareallofthefollowingEXCEP
Iwilltake________wantstogo.A、anyoneB、someoneC、whoeverD、whoC句中whoever。作主句
Newtechnologylinkstheworldasneverbefore.Ourplanethasshrunk.It’s
CME交易的玉米期货看跌期权,执行价格为450美分/蒲式耳,当标的玉米期货合约的价格为478.2美分/蒲式耳(478+2×1/4=478.5)时(玉米期货的最小
Oneinsix.Believeitornot,that’sthenumberofAmericanswhostrugglewi
关于设置在民用建筑内的燃油锅炉房的设计方案中,下列选项不正确的是()。A
关于支座力学性能试验检测,表述正确的有()。A、板式支座试验随机抽取三块支座,
隔姜灸多用于治疗A.未溃疮疡 B.中风脱证 C.风寒痹痛 D.肺痨瘰疬
《暂态地电压局部放电检测细则》中规定,暂态地电压局部放电检测中,当检测到异常时,
B4/1,9/3,16/6,25/10,36/15。 分子是2,3,4,5,6的平方。 分母是1,3,6,10,15。
最新回复
(
0
)