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
Dorothy Crowfoot Hodgkin When Dorothy Crowfoot Hodgkin was ten years old, she watched her first crystals form on a string da
Dorothy Crowfoot Hodgkin When Dorothy Crowfoot Hodgkin was ten years old, she watched her first crystals form on a string da
admin
2013-04-25
51
问题
Dorothy Crowfoot Hodgkin
When Dorothy Crowfoot Hodgkin was ten years old, she watched her first crystals form on a string dangling in a glass of salt water. Many children before and since have done the same, but in Hodgkin’s case, the sparkling geometric shapes
kindled
a fascination that would lead her to world fame. In 1964, nearly half a century later, Hodgkin received a Nobel Prize in Chemistry for discovering the structures of penicillin and vitamin B12 from photographic images of their crystals. She made the images with a technique called x-ray crystallography, which involves firing x-rays through a crystal to determine the arrangement of the atoms in it. It is a bit like determining the shape of a jungle gym from its shadow.
Born in 1910, Hodgkin spent the first few years of her life in Cairo, where her father was an official in the British colonial government. Most of her education had been at home, but once back at school in England, her keen interest in crystals won the attention of her schoolteacher. Hodgkin and a friend got special permission to join the boys studying chemistry. By age 12, she was doing chemistry experiments on rocks she found in her garden to see what they contained. That summer, while visiting her father in Khartoum, Sudan, she met Dr. A. E. Joseph, a friend of her father’s and a well-known soil chemist. Joseph took her on a tour of his laboratory. Pleased by her intense interest, he put together a small chemistry set for her, which she took back to England and set up in her mother’s attic. It was her first laboratory.
Hodgkin enrolled at Oxford University, where she eventually specialized in x-ray crystallography. At the time, the analysis of the structures of even the simplest chemicals by x-ray crystallography required at least 30 sets of calculations, all done by hand. The work
demanded
perseverance and diligence, and a good head for math. Under these conditions, Hodgkin flourished. Seeking a greater challenge after college, Hodgkin went to Cambridge to study with a young crystallographer named J.D. Bernal. Together they solved some of the most complex chemical structures ever attempted, including
those
of several vitamins and sex hormones. They took the first x-ray photographs of a protein—the stomach enzyme pepsin—showing that proteins form regular crystals. In 1937, Hodgkin received her doctorate. Within a few months, she also married historian Thomas Hodgkin, taking his name. The Hodgkins were a two-career family, working in different towns and
commuting
on alternate weekends to see each other. Dorothy Hodgkin remained at Oxford, where she continued her research, taught university classes, and raised three children. When the demand for penicillin soared during World War Ⅱ, chemists all over the world raced to determine its structure. Experimental chemists used chemical reactions. Structural chemists, such as Hodgkin, used crystallography. Despite daunting calculations, Hodgkin and her students at Oxford completed the structure in 1949, beating the experimental chemists and establishing x-ray crystallography as an indispensable tool in biochemistry. Even as Hodgkin was finishing her analysis of penicillin, however, she had already begun a study of B12, widely used to treat pernicious anemia. In 1957, she published the structure of this 180-atom molecule. (A) [■] When she was awarded the Nobel Prize in 1964, she told a group of students at the ceremonies in Stockholm, Sweden, that she hoped her position as the only woman to receive the prize that year "will not be so very uncommon in the future, as more and more women carry out research in the same way as men".
(B) [■] But what was perhaps Hodgkin’s greatest success came after the Nobel Prize, when she tackled the biggest molecule of her career. Insulin, a protein that regulates the body’s sugar storage, contains over 1000 atoms.
(C) [■] A deficiency in or insensitivity to insulin causes diabetes, a complex disease that causes suffering in several hundred million people worldwide. Hodgkin solved the structure of insulin in only five years.
(D) [■] Her achievement proved that proteins have regular shapes, and it spawned research that ultimately led to effective treatments for diabetes.
All of the following are mentioned as the key factors which contribute to her success in her career EXCEPT______.
选项
A、analytic ability
B、mathematical capacity
C、endurance
D、diligence
答案
A
解析
本题为正误判断题,考查的是考生根据文章中阐明的信息,判断什么信息是正确的,什么信息是错误的或文章中没有提到的。题目问:下列哪一项不是Hodgkin事业成功的关键因素?根据文章第五段的最后两句话“The work demanded perseverance and diligence, and a good head for math. Under these conditions, Hodgkin flourished(这种工作需要毅力和勤奋,还需要有好的数学头脑。在这种条件下,Hodgkin的事业如日中天)”。这些条件指毅力(选项C)、勤奋(选项D)和数学能力(选项B),只有A(分析能力)没有被提到,所以选A。
转载请注明原文地址:https://www.kaotiyun.com/show/3ZyO777K
0
托福(TOEFL)
相关试题推荐
He/Shethinksanoverheadprojectorisusuallyneeded.He/Shesaysthatyoushoulddrinkenough.
WhichTWOmaterialscanbeusedasasubstratum?A.oxygen-richsolutionB.coconutfibreC.mineralwoolD.rock
Completethelecturenotes.UseNOMORETHANTHREEWORDSforeachanswer.PurposeoftheminilectureToexperience【T32】______
AtfirstFionathinksthatMartin’stutorialtopicis______
Completethesentencesbelow.WriteNOMORETHANTHREEWORDSforeachanswer.TheBritishLibraryThemainfunctionofthelibr
Choosethecorrectletter,A,BorC.ReflectiveJournalAssignmentWhatistheman’sattitudeafterthediscussion?
Whichattitudeisassociatedwiththefollowingpeopleduringtheconversation?ChooseSIXanswersfromtheboxandwritetheco
CompletethenotesbelowWriteONEWORDONLYforeachanswer.TheGherkinBuildingCommissionedby:【L31】______firmcalledFoste
Thetechnologyofhumancloninghasarousedmuchcontroversyamongpeople.Somesupportit,whileothersobjecttoit.Asforme
PhilosophyofLogicalAnalysisModernphysicsandphysiologythrowanewlightupontheancientproblemofperception.Ifth
随机试题
Wegener肉芽肿患者胸部X线检查的常见表现为系统性硬化病合并肺动脉高压患者的胸部X线表现为
某医院临床医生测得500例正常成年男子血红蛋白(g/L)的数据,用统计公式求出了该指标的95%的正常值范围,问这500人中约有多少人的血红蛋白(g/L)的测定值在所求范围之内?()
在检查患者左锁骨上淋巴结时正确手法应是上述肿大的淋巴结称之为魏尔啸(Vir-chow)淋巴结,它是
小青龙胶囊,药物组成有麻黄、桂枝、干姜、细辛、五味子、白芍、法半夏、炙甘草。功能是解表化饮,止咳平喘。主治风寒水饮,恶寒发热、无汗、咳喘痰稀。方中细辛在《中国药典》中的质量控制成分是()。
《中华人民共和国环境影响评价法》规定,对于环境影响很小、不需要进行环境影响评价的,应当填报()。
关于项目管理与社会技术支持的关系,下列说法不正确的是()。
单位工程施工组织设计一般在施工图设计完成后,在拟建工程开工之前,由()主持编制。
下列产品中,属于应征消费税税目的有()。
会计人员发现会计账簿记录与实物、款项及有关资料不相符的,一律不得自行处理。( )
下列关于平等权的表述中,正确的是()
最新回复
(
0
)