首页
登录
职称英语
Perhaps one of the best-known accidental discovery is Sir Alexander 【M1】____
Perhaps one of the best-known accidental discovery is Sir Alexander 【M1】____
游客
2024-08-07
37
管理
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. [br] 【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://tihaiku.com/zcyy/3709205.html
相关试题推荐
Youaretryingtofillabathwithbothtapson,buthaveaccidentallyleftout
It’samazingthattworesearchersworkingindependentlymadethesamediscovery
It’samazingthattworesearchersworkingindependentlymadethesamediscovery_
TennisstarChrisEvert,whoretiredfromthegameaftereighteenyears,perhaps
WhileworkingonacaseDrWatsonaccidentallyfelldowna30ftdrywishingwell
TennisstarChrisEvert,whoretiredfromthegameaftereighteenyears,perhaps
TennisstarChrisEvert,whoretiredfromthegameaftereighteenyears,perhaps
WhileworkingonacaseDrWatsonaccidentallyfelldowna30ftdrywishingwell
Perhapsoneofthebest-knownaccidentaldiscoveryisSirAlexander【M1】____
Perhapsoneofthebest-knownaccidentaldiscoveryisSirAlexander【M1】____
随机试题
Readthearticlebelowaboutthewaystoimproveemployees’motivation.
桁架结构形式与荷载均已知。结构中杆件内力为零的杆件数为: A.0根 B.
人民币的法定管理部门是()。A.中国人民银行 B.商业银行 C.国务
患者的权利中不包括A、经济免责权 B、平等医疗权 C、疾病认知权 D、法律
教师采用摸底考试了解学生已有的知识和能力的做法属于__________。A.形成
对股东会而言,董事会是股东大会决议的()。A:权力机构 B:决策机构 C:执
下列不属于班级管理内容的是( )。A.班级组织建设 B.班级制度管理
企业股份制改组与股份有限公司设立的法律审查,是指需由律师对企业改组与公司设立的文
下列合同中,债务人不履行债务,债权人有留置权的是()。A.买卖合同 B.运输合
以下选项中,属于利润表中项目的是()。A、净利润 B、其他综合收益 C、每股
最新回复
(
0
)