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
2016-02-23
27
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://jikaoti.com/ti/X4MYFFFM
0
专业英语八级
相关试题推荐
BeforeJoseMartinezsetuphispizzadeliveryservice,he
CultureShockI.Thedefinitionofcultureshock—feelingslikesurprise,disorientation,uncertaintyand(1)______(1)______
HowtoPresentaSeminarPaperUniversitystudentsoftenattendmanyseminarsforvarioussubjects,thereforeitisusefulf
Cosmeticsarenowmorepopularthaneverbefore.Theagencyresponsibleforregulatingthe【1】istheFoodandDrugAdministratio
Ofthefollowingword-formationprocesses,_____isthemostproductive.
BydrawingontheWorldBank’sprojectionsofsocioeconomicdevelopmentoverthenextquartercentury,researchersattheWorl
______isalanguagephenomenoninwhichthesamewordmayhavetwoormoredifferentmeanings.
Scientistsalreadyknewthatbilingualyoungadultsandchildrenperformbetterontasksdictatedbythebrain’sexecutivecontr
Scientistsalreadyknewthatbilingualyoungadultsandchildrenperformbetterontasksdictatedbythebrain’sexecutivecontr
Whichofthefollowingsentencesispossibletoarouseambiguity?
随机试题
2014年5月15日,甲公司与乙公司签订买卖合同,约定:甲公司从乙公司购进5台空调、2个冰柜,货款总计60000元,从2014年10月起分四期按月支付,每期支付15000元。2014年5月20日,乙公司将合同约定的货物全部交给甲公司。5月27日,赵某为甲公
从哪几个方面把握电子商务网站主页和页面的特色设计?
在自然光线下,瞳孔直径约为
A.补肾壮阳,祛风除湿B.补肾助阳,润肠通便C.温肾壮阳,祛寒除湿D.补肾益精,养血益气淫羊藿的功效是
某银行信贷员经手其父所在公司的一笔贷款时,应该()。
导游人员走姿要大方,手指自然弯曲,两臂自然摆动,摆幅不超过30度。()
我们能够制造出比现在一般的自行车更结实的自行车,我们也能够制造出比现在一般的自行车更轻便的自行车。所以,我们能够制造出同时具有以上两种优点的自行车。上述论证中的推理缺陷与以下哪项推理中的缺陷最相似?
办公信息系统的基本功能包括四方面,下面哪条描述不太确切?
一个完整的计算机软件应包含______。
Theworld’sgreatestsnow-cappedpeaks,whichruninachainfromtheHimalayastoTianShan【C1】______theborderofChinaandKy
最新回复
(
0
)