首页
登录
职称英语
Though it now seems merely an episode in the last year of World War I, the i
Though it now seems merely an episode in the last year of World War I, the i
游客
2024-02-06
13
管理
问题
Though it now seems merely an episode in the last year of World War I, the influenza pandemic of the autumn of 1918 was one of the three greatest outbreaks of disease in history. Only the plague of Justinian and the Black Death compare with it. A quarter of the world’ s population was affected; all in all, it killed 22 million people, almost twice as many as were killed in the war itself. In India, more people died from influenza in a few months than had died from cholera in twenty years. In the United States, half a million people died.
Through centuries, the course of epidemics has run from east to west. The 1918 influenza epidemic followed this pattern, reaching America last. Traditionally, Asia has been the matrix of disease, almost as though there existed, in the vastness of Mongolia, a permanent focus of infection which would erupt periodically into the rest of the world. Some doctors maintained that the influenza was introduced by Chinese labor battalions that landed on the coast of France. Some attributed it to Russian soldiers arriving from Vladivostock. Others thought it might have developed in Spain from an earlier bronchitis which was so prevalent during the spring that the name "Spanish" was given to the autumn influenza. There was even one tenuous theory that the disease sprang into being in an isolated Georgia training camp during the winter of 1917 and migrated westward until it had circumnavigated the earth.
Influenza is still a mysterious disease. No one yet knows whether it is one virus or several, why it occurs in cycle, or how and where it lies dormant between epidemics.
There are theories of weather, theories of the wearing off of group immunity, and even a theory of determination by economic circumstances. The most generally held current explanation is, however, that a pandemic like that of 1918 arises when a new and explosive strain of virus develops through a spontaneous process of
mutation
or renewal. [br] The word "mutation"(Line 6, Para. 3)means______.
选项
A、development
B、evolution
C、cultivation
D、transformation
答案
D
解析
词汇题。通过理解上下文,从相近的词语中猜测词义。文中提到了“mutation or renewal”故可知renewal便是它的近义词,意为“突变,演变”,D选项也表示这个意思,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3427908.html
相关试题推荐
Althoughpunctualhimself,theprofessoris______(习惯了学生迟到).usedtostudents’bei
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkinds
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkinds
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkinds
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkinds
Someanimalsarewidelyusedinexperiments______(尽管有些人对此表示反对).eventhoughsome
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
随机试题
Theideaofgoingoverseasforuniversitystudyisanexcitingprospectfor
Iknownowthatthemanwhosatwithmeontheoldwoodenstairsthathotsumm
Wewon’tencouragehimtodothat______heisingoodhealth.A、evenifB、incas
[originaltext]W:Goodmorning,class.TodayIthoughtwewouldtalkaboutsometh
肠梗死的病灶呈()。A.不规则形 B.节段性 C.呈楔形 D.条索状
砖墙的转角处和交接处应同时砌筑,不能同时砌筑处,应砌成斜槎,斜槎长度不应小于高度
A.子病犯母 B.相侮传变 C.制化传变 D.相乘传变 E.母病及子水气
Thechangeinthatvillagewasmiraculou
左边给定的是多面体的外表面,右边哪一项能由它折叠而成?请把它找出来。 A.如图
有一天,我请学生读课文,只有四名学生举手,我说:“杨萌你读。”她大大方方读起来,
最新回复
(
0
)