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
At the turn of the 20th century, Dutch physician Christiaan Eijkman showed that disease can be caused not only by microorganism
At the turn of the 20th century, Dutch physician Christiaan Eijkman showed that disease can be caused not only by microorganism
admin
2019-08-16
22
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.
【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://kaotiyun.com/show/LDbK777K
0
专业英语八级
相关试题推荐
Attheturnofthe20thcentury,DutchphysicianChristiaanEijkmanshowedthatdiseasecanbecausednotonlybymicroorganism
Attheturnofthe20thcentury,DutchphysicianChristiaanEijkmanshowedthatdiseasecanbecausednotonlybymicroorganism
Attheturnofthe20thcentury,DutchphysicianChristiaanEijkmanshowedthatdiseasecanbecausednotonlybymicroorganism
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicsproductline-up.Inallthegadgetsinthehome,【M1】___
Poetrydoesn’tmattertomostpeople.Onehastowonderifpoetryhasanyplaceinthe21stcentury,whenmusicvideosandsat
Poetrydoesn’tmattertomostpeople.Onehastowonderifpoetryhasanyplaceinthe21stcentury,whenmusicvideosandsat
Therearemoredrugsdispensedforpainthanforanyotherdiseaseonthisplanet.Drugcompaniesenjoyearninghugeprofitsf
Therearemoredrugsdispensedforpainthanforanyotherdiseaseonthisplanet.Drugcompaniesenjoyearninghugeprofitsf
Issuesconcerninghumanlearningareamongthecriticaltopicsineducationalpsychology,childdevelopment,andcognitivescie
Issuesconcerninghumanlearningareamongthecriticaltopicsineducationalpsychology,childdevelopment,andcognitivescie
随机试题
Acandlelitdinnerworkswondersforromance.Nowscientistssayitcouldalsobegoodforyourheart.Breathingincandlesmoke
重症肌无力常与哪种病合并存在
对出口烟花爆竹报检说法正确的有:( )
借款人自主支付方式下,借款人提出提款申请后,贷款人应审核借款人提交的贷款清单所列用款是否符合约定的贷款用途,计划或用款清单中的贷款资金支付是否超过贷款人()起付标准或条件。[2015年10月真题]
A、B企业于2012年4月1日签订买卖合同,合同标的额为100万元。根据合同约定,B企业于4月10日提交全部货物,A企业验收合格后,于2012年4月20日提交B企业一张出票后1个月付款的银行承兑汇票,汇票金额为100万元,出票日为4月20日,承兑人为甲银行
可转换债券是指在一定时期内,可以按规定的价格或一定的比例,由持有人自由选择转换为______的债券。
下列关于第三次科技革命的表述,不正确的是()。
“一把钥匙开一把锁”所反映的是()。
在计算机系统中,允许多个程序同时进入内存并运行,这种方法称为()。
某系统总体结构图如下图所示:该系统总体结构图的深度是( )。
最新回复
(
0
)