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
Although we already know a great deal about influenza, it is difficult for epidemiologists(流行病学家), who study infectious disease,
Although we already know a great deal about influenza, it is difficult for epidemiologists(流行病学家), who study infectious disease,
admin
2013-11-11
45
问题
Although we already know a great deal about influenza, it is difficult for epidemiologists(流行病学家), who study infectious disease, to【C1】______when and where the next flu epidemic will occur, and how【C2】______it will be. There are three kinds of influenza virus, known as A, B and C. Influenza C virus is relatively stable and causes mild【C3】______that do not spread far through the population. The A and B types are【C4】______, and are responsible for the epidemics that cause frequent concern. Following any virus attack, the human body builds up antibodies which confer(给予)immunity to that strain of virus, but a virus with the capacity to change its character is able to bypass this【C5】______. Variability is less developed in the influenza B virus, which affects only human beings. An influenza B virus may cause a widespread epidemic but will have little effect if【C6】______into the same community soon afterwards, since nearly everyone will have built up antibodies and will be immune. The influenza A virus, which【C7】______affects animals, is extremely unstable and is responsible for some of the worst outbreaks of the disease, such as the unparalleled pandemic, or world epidemic. Accurate prediction is difficult because of the complication of the【C8】______. A particular virus may be related to one to which some of the population have【C9】______involved immunity. The extent to which it will spread will depend on factors such as its own strength, or virulence, the ease with which it can be【C10】______and the strength of the opposition it encounters. Scientists, however, have a reliable general picture of the world situation, according to which we may take some precautions.
A)partially I)epidemics
B)guess J)also
C)factors K)attacks
D)equally L)introduced
E)generally M)unstable
F)protection N)infections
G)transmitted 0)predict
H)severe
【C4】
选项
答案
M
解析
此处应填形容词。前句说丙型流感病毒relatively stable,可知甲乙两种病毒是“不稳定的”。本段最后一句中还有原词复现,故选M)unstable。
转载请注明原文地址:https://kaotiyun.com/show/ia27777K
0
大学英语六级
相关试题推荐
Negotiationsworkwonders.Thisisparticularlysoininternationalbusinesssinceitismostlythroughnegotiationsthatexport
A、Farmingactivities.B、Themeaningoflife.C、Revolution.D、Morality.A短文说从诗人的视角,我们可以感受到农场的日常生活,还有一些背景场景,比如犁地、摘苹果或者补墙,故选A。D项是强干
A、Tooslowforadifficultbookthoughjustrightforanon-seriousone.B、Tooslowforanon-seriousbookbuttoofastforadi
A、Thewomanchangedthebooking10minutesago.B、Thewomanmadenobooking.C、Thewomanbookedatableat8o’clock.D、Thewoma
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheyenteranewculture.Expertshavebeeninterestedin
AsurprisingnumberofJapaneseseemtobeactuallyenjoyingtherecession.Pressedbytheircompaniestoworkfewerhours,they
NegotiatingSkillsCanBeLearnedManagersnegotiatecontinuously,withsuperiors,subordinates,peersandclients.Research
NegotiatingSkillsCanBeLearnedManagersnegotiatecontinuously,withsuperiors,subordinates,peersandclients.Research
Thegoalis______(使每个人都有机会接受高等教育)whoiswillingandcapableregardlessofhisfinancialsituation.
Thingshavechangedinyourlife.Mostnotably,youarenolongeremployed.Perhapsyou’vebeenlaidofffromyour【B1】______work
随机试题
疝手术病人入院时血压150/96mmHg。针对此血压值正确的处理是
主治食积不化,脘腹胀满,不思饮食及肠鸣泄泻的中药是()。
A.舒芬太尼B.麦角胺C.哌醋甲酯D.麦角胺咖啡因片属于药品类易制毒化学品的是
安全控制的目标是减少和消除生产过程中的事故,保证人员健康安全和财产免受损失,具体包括( )。
甲在电冰箱上使用“天鹅”注册商标。根据商标的分类,甲的“天鹅”商标能够被归人的商标类型属于文字商标和商品商标。()
根据契税法律制度的规定,下列行为中,应征收契税的是()。
注意有两个特点,即()和()。
Thereweresomeconsistentpatternsamongtheheavierreaders:Fortheyoungerchildren—ages6to11—beingreadaloudtoregula
UML是一种面向对象的统一建模语言。在UML中有(51)四种关系。
Whydoesthemanthinkthathisfirstholidayawayfromhomewasn’tveryhappy?
最新回复
(
0
)