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
The improbable chain of events that leads Alexander Fleming 1. ______ to discover penicillin in 1928 is the stuff which s
The improbable chain of events that leads Alexander Fleming 1. ______ to discover penicillin in 1928 is the stuff which s
admin
2012-01-27
72
问题
The improbable chain of events that leads Alexander Fleming 1. ______
to discover penicillin in 1928 is the stuff which scientific myths 2. ______
are made. It was a discovery that would change the course of the history. The active ingredient in that mold, which Fleming
named penicillin, turned to be an infection-fighting agent of 3. ______
enormous potency. When it was finally recognized as what it
was--the efficacious life-saving drug in the world--penicillin 4. ______
would alter forever the treatment of bacterial infections. By the
middle of the century, Fleming’s discovery spawned a huge phar- 5. ______
maceutical industry, churning out synthetic penicillin that would
conquer some of man-kind’s most ancient scourges, including
syphilis, gangrene, and tuberculosis.
When he died a heart attack in 1955, he was mourned by 6. ______
the world and buried as a national hero in the crypt of St. Paul’s
Cathedral in London. Although Fleming’s scientific work in and
of itself may not have reached great, his singular contribution 7. ______
changed the practice of medicine. He deserves our utmost recog-
nition. At the same time, we must bear on mind that the 8. ______
"Fleming Myth", as he called it, embodies the accomplishments
of many giants of anti-biotic development. Fleming is but a cho-
sen representative for the likes of Florey, Chain, Domagk, and
Waksman, many of who remain, sadly, virtual unknowns. 9. ______
Their achievements have made the world a better, healthier
place. In commemorating Fleming, and we commemorate them 10. ______
all.
How does it happen that children learn their mother tongue
so well? When we compare with adults learning a foreign 11. ______
language, we often find this interesting fact. A little child
without knowledge or experience often succeeds to a complete 12. ______
master of the language. A grown-up person with fully developed 13. ______
mental powers, in most cases, may end up in a faulty and inex- 14. ______
act command. What accounts of this difference? 15. ______
Despite other explanations, the real answer in my opinion
lies partly with the child himself, partly in the behavior of the 16. ______
people surround him. In the first place, the time of learning the 17. ______
mother tongue is the most favorably of all, namely, the first 18. ______
years of life. A child hears it speak from morning till night and, 19. ______
what is more important, always in its genuine form, with the
right pronunciation, right intonation, right use of words and right
structure. He drinks all the words and expressions which come to 20. ______
him in a fresh,ever-bubbling spring.There is no resistance:
there is perfect assimilation.
选项
答案
∧spawned改错had。
解析
前面的时间状语用by引导,主句一般用完成时。
转载请注明原文地址:https://kaotiyun.com/show/zd6O777K
0
考博英语
相关试题推荐
Perhapsallsocieties(aresignificantlymoreadvanced)thanourownhaveachievedaneffectivepersonalimmortalityandloseth
Ourresearchhasnotshownusanythingsofar,sothereislittle______tocontinuewithit.
Businessinthisareahasbeen______becausepricesaretoohigh.
Turningcultivatedlandbackintoforestsorpastureisafundamentalwaytostemsoil______anddesertificationinthelongru
Becauseofitsexcellenceinquality,forthelasttwoyears,Audicarhas______Germany’sToutingCarChampionship.
Thedrugstoreatthecomerofourstreetsellsaspirinsand______penicillinprescriptions.
Scientistsclaimthatairpollutioncausesadeclineintheworld’saverageairtemperature.Inordertoprovethattheory,ecol
推进现代化建设、完成祖国统一、维护世界和平与促进共同发展,是中国人民在新世纪的三大历史任务。
现代人是在陶醉于电视的状态中成长的。他们耽搁了吃饭,不做家务,牺牲了睡眠时间。电视是普天下的安静剂。母亲为了哄孩子们不哭闹,往往把他们往电视机前一放,而不管他们所看的电视节目的内容是什么——只要他们保持安静就行了。
NeitherJohnnorhisbrothersboughtwhat______needed.
随机试题
对冲基金
病人,男性50岁,3个月前发生上消化道出血,经检查,证实为食管静脉曲张,2天前再次出现,呕血,黑便,来院急诊,过去有乙肝病史20余年,此病人诊断为门脉高压。紧急处理不妥的是( )。
下列有关工程管线直埋敷设的叙述中,错误的是:[2011-84,2009-80]
微分方程y’=ex-y满足y(1)=ln2的特解是()。
雷诺数的物理意义是( )。
代理记账,是指企业委托有会计资格证书的人员的记账行为。()
除中国证监会另有规定外,QDII基金不得有下列行为()。
(2011年卷一第39题)下列哪些属于专利法意义上的疾病的诊断和治疗方法?
BecauseImarriedaphotographer,oncewehadchildren,ourholidaycardsofcoursebecamevehiclesfortheircutenessandhisc
A、BecauseitisafamousprivateschoolintheUnitedStates.B、Becausetheuniversityhasteacherpreparationprogramthathen
最新回复
(
0
)