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
38
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.
【S5】
选项
答案
Because → Although
解析
转载请注明原文地址:https://kaotiyun.com/show/igOK777K
0
大学英语六级
相关试题推荐
Itisreportedthat______(一个恐怖组织宣称对这次轰炸负责).
ThedeercarcassshowedWaldoWilcoxtheremaybemountainlionnearby,andthismeanshiscattlewereindanger.Someexperts
A、Acomputerstudentattheuniversity.B、Acomputerartist.C、Afamousartist.D、Thedirectorofthenewcomputermuseum.DWho
A、Jobless.B、Wrongideaabouttheworktheydo.C、Choosetheircareersundertheinfluenceofthesefalseimages.D、Voidcertain
A、Thelargenumberofpeoplewhowanttogetonlinedegrees.B、Thecountrieswhichprovideonlineeducation.C、Thecompanieswhi
InMedievalEnglandthetallesthorseswereriddenbypeopleofthehighestrankwho,fromtheirlofty(36)______,lookeddowno
GriffithworkedforafirmthatspecializedineconomicdevelopmentinWashingtonD.C.becausesheneededmoneytopayforherd
A、aninterestingtopicB、specificfactsC、thewriter’suniqueperspectiveD、ageneralimpressionC由题干agoodwritingmustpresent
Badeatinghabits,increasedfoodavailability,increasinglysedentarylifestyleandreducedphysicalactivityarethefirstfou
Accordingtouniversityofficials,whoareputinanunfavorablesituationunderearlyadmissionprograms?Whatprocedurewill
随机试题
重型再障的血常规诊断标准是
A.分泌性中耳炎B.急性乳突炎C.隐性乳突炎D.急性化脓性中耳炎E.慢性化脓性中耳炎由细菌引起,主要位于鼓室黏膜的急性化脓性炎症病变,好发于儿童的疾病是
男性,70岁,不慎滑倒摔伤左髋部,被人抬来急诊。体查:左下肢缩短3cm,左足呈外旋90°畸形,左髋部轻肿,压痛及叩击痛明显,髋关节活动受限。该患者经上述治疗后,复查X线片示大转子上移4cm,颈干角90°,骨折线模糊。发生此种情况的主要原因是
A.未闭的鞘状突为一条细小管道B.鞘状突下段闭锁而上段未闭C.鞘状突两段闭锁而中段不闭D.右侧睾丸下降迟于左侧E.腹内斜肌弓状下缘发育不全或位置偏高右侧腹股沟疝多见的原因是
患者,男,47岁。腰膝酸软,头晕耳鸣,肢冷畏寒,阳事无力,夜尿频数,舌质淡,脉弱无力。用药宜首选()
某公司为增值税一般纳税企业,主要生产和销售甲产品,适用税率17%,所得税率25%,不考虑其他相关税费,该公司2011年发生以下业务:(一)销售甲产品一批,该批产品的成本1627元,销售价格40万元,专用发票注明增值税6.8万元,产品已经发出,提货单已交给买
普通烧结砖的强度用强度等级来表示,具体为( )。
甲女与其嫂乙有仇,意图杀害乙,某日,趁乙生病之时,煮好一碗面条给乙吃,乙怀疑面条有毒,而将该面条给前来玩耍的邻居小孩丙食用,丙食后2小时死亡。本案中()。
Difficultasitis,Englishstudyisinthelongrun______toalearnerinhisorhercareerdevelopment.
HowdidthetravellerhearaboutNewYork?WhichpeopleshowedthetravelleraroundNewYork?
最新回复
(
0
)