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
Elizabeth Hazen and Rachel Brown copatented one of the most widely acclaimed wonder drugs of the post-Second World War years. Ha
Elizabeth Hazen and Rachel Brown copatented one of the most widely acclaimed wonder drugs of the post-Second World War years. Ha
admin
2011-01-06
58
问题
Elizabeth Hazen and Rachel Brown copatented one of the most widely acclaimed wonder drugs of the post-Second World War years. Hazen and Brown’s work was stimulated by the wartime need to find a cure for the fungus(真菌类) infections that afflicted many military personnel. Scientists had been feverishly searching for an antibiotic toxic enough to kill the fungi but safe enough for human use, since, unfortunately, the new "wonder drugs" such as penicillin and streptomycin(链霉素) killed the very bacteria in the body that controlled the fungi. It was to discover a fungicide without that double effect that Brown, of New York State’s Department of Health Laboratories at Albany, and Hazen, senior microbiologist at the Department of Health in New York, began their long-distance collaboration. Based upon Hazen’s previous research at Columbia University, where she had built an impressive collection of fungus cultures, both were convinced that an antifungal organism already existed in certain soils.
They divided the work. Hazen methodically screened and cultured scores of soil samples, which she then sent to her partner, who prepared extracts, isolated and purified active agents, and shipped them back to New York, where Hazen could study their biological properties. On a 1948 vacation, Hazen accidentally collected a clump of soil from the edge of W.B. Nourse’s cow pasture in Fauquier County, Virginia, that, when tested, revealed the presence of the microorganisms. In farm owner Nourse’s honor, Hazen named it Streptomyces noursci , and within a year the two scientists knew that the properties of their substance distinguished it from previously described antibiotics. After further research they eventually reduced their substance to a fine, yellow powder, which they first named "fungiciden", then renamed "nystatin"(to honor the New York State laboratory) when they learned the previous name was already in use. Of their major discovery, Brown said lightly that it simply illustrated "how unpredictable consequences can come from rather modest beginnings."
Who was W.B. Nourse?
选项
A、A microbiologist
B、A teacher of Hazen’s
C、A collector of fungi
D、A farmer
答案
D
解析
查读原文相关信息。与W.B. Nourse相关的信息有W.B.Nourse’s cow pasture,In farm owner Nourse’s honor,由此可见,他的身份应该是farmer。
转载请注明原文地址:https://kaotiyun.com/show/5smd777K
本试题收录于:
职称英语卫生类B级题库职称英语分类
0
职称英语卫生类B级
职称英语
相关试题推荐
1.Theterm"jointinternationalbusinessventure",jointventureforshort,hascometomeanmanythingstomanypeople.Itsom
Directions:Usingtheinformationinthetext,completeeachsentence6-10,withawordorphrasefromthelistbelow.Foreach
Itisnaturalforyoungpeopletobecriticaloftheirparentsattimesandtoblamethemforthemostofthemisunderstandings
Beautyhasalwaysbeenregardedassomethingpraiseworthy.【R1】______Theyhavebettermarriagesandhavemorerespectableoccupat
Beautyhasalwaysbeenregardedassomethingpraiseworthy.【R1】______Theyhavebettermarriagesandhavemorerespectableoccupat
AfterIwasmarriedandhadlivedinJapanforawhile,myJapanesegraduallyimprovedtothepointwhereIcouldtakepartins
1.Distanceeducationisenrollmentandstudywithaneducationalinstitutionthatprovideslessonmaterialspreparedinaseque
SleepWeallknowthatthenormalhumandailycycleofactivityisofsome7---8hours’sleepalternatingwithsome16--17hours
Theseoldbuildingsaregorgeous.
A.directcontactwithinfectedbloodB.from2to15ormoreyearsafterbecominginfectedC.withoutsymptomsD.acquiredi
随机试题
依照外商在企业注册资本和资产中所占股权和份额的比例不同,在我国设立的外商投资企业可分为
权衡方案时,咨询师应从哪些因素出发来说明建议的备择方案?
骨折的治疗原则是
患者,男性,50岁。因“神志不清、行为异常5天,昏迷1天”入院,既往有肝硬化病史8年。入院查体:呼之不应,压眶反射无反应。皮肤可见蜘蛛痣。实验室检查:血氨145μg/dl。脑电图显示脑电波每秒3次。诊断为肝硬化、肝性脑病。患者入院后制定的护理措施不恰当
关于病毒性心肌炎的治疗以下哪项是不正确的()。
某机械工程设备安装工程项目,业主拟通过招标确定施工承包商,业主经过资格预审确定了A、B、C、D4家投标人作为潜在投标人,这4家潜在投标人在投标时出现以下情况:A投标人在编制投标文件时主要依据设计图纸、工程量表、其他投标人的投标书、有关法律法规等。B投标
下列关于建筑设计评价的说法中,错误的是()。
根据《刑事诉讼法》及有关规定,下列人员中,属于刑事诉讼参与人的是()。
个人住房贷款的贷后与档案管理包括()。
世界上第一张控制图是()。
最新回复
(
0
)