首页
登录
职称英语
At the turn of the 20th century, Dutch physician Christiaan Eijkman showed
At the turn of the 20th century, Dutch physician Christiaan Eijkman showed
游客
2023-12-10
7
管理
问题
At the turn of the 20th century, Dutch physician Christiaan
Eijkman showed that disease can be caused not only by
microorganisms but by a dietary efficiency of certain substances【M1】______
now called vitamins. In 1909 German bacteriologist Paul Ehrlich
introduced the world’s first bactericide, a chemical designed to kill
specific kinds of bacteria with killing the patient’s cells as well.【M2】______
Following the discovery of penicillin in 1928 by British
bacteriologist Sir Alexander Fleming, antibiotics joined medicine’s
chemical armory, making the fight against bacterial infection
almost a routine matter. Antibiotics cannot act as viruses, but【M3】______
vaccines have been used to greatly effect to prevent some of the【M4】______
deadliest viral diseases. Smallpox, once a worldwide killer, was
completely eradicated by the late 1970s, and in the United States a【M5】______
number of polio cases dropped from 38,000 in the 1950s to less
than 10 a year by the 21st century.
By the middle of the 20th century scientists believed they
were well on the way to treating, preventing, or eradicating many
of the most deadly infectious diseases that plagued humankind for【M6】______
centuries. And by the 1980s the medical community’s confidence【M7】______
in its ability to control the infectious diseases had been shaken by【M8】______
the emergency of new types of disease-causing microorganisms.【M9】______
New cases of tuberculosis developed, caused by bacteria strains
that were resistant to antibiotics. New, deadly infections on which【M10】______
there was no known cure also appeared, including the viruses that
cause hemorrhagic fever and the human immunodeficiency virus
(HTV), the cause of acquired immunodeficiency syndrome. [br] 【M6】
选项
答案
∧plagued一had
解析
语法错误。该句的谓语动词是believed,属于过去时,that引导的是定语从句,修饰其先行词infectious diseases.意思为“已经感染人类几个世纪的传染性疾病”,此动作是发生在主句动作befieved之前,所以要将时态改为过去完成时。
转载请注明原文地址:https://tihaiku.com/zcyy/3260049.html
相关试题推荐
ThenametheWarsoftheRoseswas,infact,coinedbythegreat19thcenturyno
AsthemerchantmanclassexpandedintheeighteenthcenturyNorth1.______.
AsthemerchantmanclassexpandedintheeighteenthcenturyNorth1.______.
AsthemerchantmanclassexpandedintheeighteenthcenturyNorth1.______.
WhichofthefollowingisthemostsignificantAmericanpoemofthe20thcentury
______wasconsideredtobethegreatestdramatistinthe18thcentury.A、HenryF
[originaltext]China’seconomyshowedunexpectedstrengthinthesecondquarte
The18thcenturywitnessedanewliteraryform—the______modernEnglishnovel,wh
WhichofthefollowingwordsisNOTaderivative?A、Physician.B、Facial.C、Unify.
TheEnglishCivilWarinthe17thcenturyisalsocalled______A、thePuritanRev
随机试题
以下属于斜结构柱底部截面样式构造的有()。A.垂直于轴线 B.水平于轴线 C
加强对生态文明建设的总体设计和组织领导,设立()机构。A.国有自然资源资产
我国现行密级配沥青混凝土马歇尔试验技术标准中要求控制()指标。A.高温稳定性
(2017年)2017年,某市发展改革部门会同同级测绘地理信息主管部门,编制该市
下列哪个选项与确定建筑结构的地震影响系数无关() A.场地类别和设计地震分组
根据管理方格理论,“乡村俱乐部”领导风格的特点是( )。A.管理者既不关心任务
下列不属于民事法律行为必须具备的条件的是()。A.行为人具有相应的民事行为能力
A.埃索美拉唑 B.法莫替丁 C.铝碳酸镁 D.多潘立酮 E.碳酸氢钠H
某分部工程的双代号网络计划如下图所示,图中的绘制错误有()。 A.有多个终点
在特定条件下,企业可以将以公允价值计量且其变动计入当期损益的金融负债重分类为以摊
最新回复
(
0
)