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
Perhaps one of the best-known accidental discovery is Sir Alexander 【M1】______ Fleming’s discovery of penicillin. In 1922 Flemin
Perhaps one of the best-known accidental discovery is Sir Alexander 【M1】______ Fleming’s discovery of penicillin. In 1922 Flemin
admin
2016-03-15
65
问题
Perhaps one of the best-known accidental discovery is Sir Alexander 【M1】______
Fleming’s discovery of penicillin. In 1922 Fleming accidentally discovered
an antibiotic that killed bacteria but not white blood cells . While suffering 【M2】______
from a cold, Fleming made a culture from some of his own nasal secretions.
As he examined the culture dish, filling with yellow bacteria, a tear fell from his 【M3】______
eye into the dish. The next day when he examined the culture, he found a clear
space which the tear had fallen. His keen observation and inquisitiveness led 【M4】______
him to the correct conclusion: the tear contained a substance that caused rapid
destruction of the bacteria, but was harmless to human tissue. The antibiotic
in the tear he named lysozyme. It turned to be of little practical importance, 【M5】______
because the germs that lysozyme killed were relatively harmless, and this discovery 【M6】______
was an essential prelude to this of penicillin, as we shall see. 【M7】______
In 1928, Fleming was doing a research on influenza. While carrying out some 【M8】______
routine laboratory work that involved microscopic examination of cultures of
bacteria growth in petri dishes(flat glass dishes with covers), Fleming notice in 【M9】______
one dish an unusual clear area. Examination showed that the clear area surrounded
a spot where a bit of mould had fallen onto the dish, which had been left
uncovered. Remembering his experience with lysozyme, Fleming concluded that
the mould was producing something that was dead to the Staphylococcus bacteria 【M10】______
in the culture dish. Fleming isolated the mould and identified it as belonging to
the genus Penicillium, and he named the antibiotic substance it produced penicillin.
【M3】
选项
答案
filling--filled
解析
(此处两个逗号之间的内容修饰culture dish,fill“充满,装满”与之为被动关系,因此应当把filling改为filled。相当于定语从句which was filled with…)
转载请注明原文地址:https://www.kaotiyun.com/show/qAyK777K
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
DictationListentothepassage.Forquestions21~25,fillintheblankswiththeexactwordsorphrasesyouhear.Toma
DictationListentothepassage.Forquestions21~25,fillintheblankswiththeexactwordsorphrasesyouhear.Toma
DictationListentothepassage.Forquestions21~25,fillintheblankswiththeexactwordsorphrasesyouhear.Toma
Howmanyscientistsdidthemanciteasexamplestoillustratehispoint?
Whatisthenewdiscoveryabout?
Perhapsalmosteveryonehasanexperienceofhavingfeltletterafterlisteningtogoodmusicorsingingjoyfully.Thiseffectof
Ifthisisa"Mandelamoment"forAmerica,therewere—perhapsinevitably—fewspecificcluesinBarackObama’svictoryspeechas
Youaretryingtofillabathwithbothtapson,buthaveaccidentallyleftouttheplug.Normallythehotwatertaptakes8min
目前,已有300多万美国儿童在享受着医疗保险,700多万美国人已经脱离了贫困线。(liftoutof)
旅游是全球经济中一个快速增长的领域。【T1】因而发展中国家正努力从这一产业中获利,以促进海外投资、增加金融储备。(cashinon)联合国一方面承认,该产业的无序发展会造成严重的环境和社会问题,另一方面却坚持认为这些负面影响可以得到控制和减小。最近我在
随机试题
ANeitherhenorhistwobrothersBwasresponsibleCforthefirewhichDhadcausedgreatlossestothefamily.
传染病暴发流行时,经省级政府决定对疫区实行封锁措施,此类传染病的类别和处理措施,属于
苦参的功效是
支架设计时,应考虑的荷载有()。
关于招标信息的修正,下列说法中正确的有()。
甲集团、乙集团、A公司和B公司有关资料如下:(1)某上市公司A公司从事机械制造业务,甲集团持有A公司40%股权,乙集团持有房地产公司B公司100%股权,甲集团将持有的A公司40%股权,按3000万元的价格转让给乙集团,甲、乙集团之间无关联关系;
三大运营商纷纷推出流量商店服务,该策略属于网络营销中的()。
下列不属于教育研究方法基本原则的是()
已知矩阵A=有两个线性无关的特征向量,则a=_______.
如果派生类以protected方式继承基类,则原基类的protected成员和public成员在派生类中的访问属性分别是
最新回复
(
0
)