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
31
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.
Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.
选项
A、She hoped that no other women could ever win the Nobel Prize in the future.
B、She hoped that more and more women could be actively engaged in chemistry study.
C、She hoped that it would be a common phenomenon for women to win the Nobel Prize in the future.
D、She is suitable and qualified for this job. She hoped that in the future more and more women could conduct research, as men have.
答案
C
解析
本题是句子简化题,考查的是考生不受细枝末节的干扰,理解文章中某一复杂句子所表达的基本意思的能力,即用简化的句子表达原句基本意思的能力。文中涂黑的句子“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’”的意思为“作为那年唯一荣获诺贝尔奖的女性,她希望‘这样的情况将来不要太少见,因为越来越多的女性像男性一样进行科学研究’”。实际上,其核心意思为选项C,即“她希望妇女获得诺贝尔奖在将来成为一个普遍现象”。
转载请注明原文地址:https://kaotiyun.com/show/kZyO777K
0
托福(TOEFL)
相关试题推荐
Inthemiddlepart,Klaraneedstousea______.Theprofessorsuggeststhatheadingsare______.
SECTION1Questions1-10Questions1-4AnswerthefollowingquestionsusingNOMORETHANTHREEWORDSAND/ORANUMBERforeachga
Mikesuggestsaconfigure-to-orderlaptopisbetterifyouhave______demandsorneeds.Mikesaysyoushould______yoursele
Thelibrariansaysthattrainingalwaysincludes
Completethenotesbelow.WriteNOMORETHANTWOWORDSforeachanswer.HowtokillbadinsectsChemicalmethodsThesesolutions
Completethenotesbelow.WriteNOMORETHANTWOWORDSforeachanswer.TheArgussystemDevelopedbyRo
Whichattitudeisassociatedwiththefollowingpeopleduringtheconversation?ChooseSIXanswersfromtheboxandwritetheco
AsystemwasdevelopedtocontroltrafficcongestionontheM25motorway.Expertsuse【L5】________informationfromthemotorw
Withlittle(nor)nomassand(no)electriccharge,neutrinoscanpenetrateasolidobjectsuchastheEarth(as)ifit(were)n
DorothyCrowfootHodgkinWhenDorothyCrowfootHodgkinwastenyearsold,shewatchedherfirstcrystalsformonastringda
随机试题
下列有关《钦定宪法大纲》的说法,错误的是()
清朝的审判复核机关是()。
在建设工程施工阶段,属于监理工程师投资控制的任务是( )。
票据行为具有( )特征。
E公司只产销一种甲产品,甲产品只消耗乙材料。2010年第4季度按定期预算法编制2011年的企业预算,部分预算资料如下:资料一:乙材料2011年年初的预计结存量为2000千克,各季度末乙材料的预计结存量数据如表1所示:每季度乙材料的购货款于当季支付40
甲将一台电脑无偿借给乙使用,期限为3个月。在借用期内,甲和丙订立了买卖该电脑的合同,但未对电脑的交付问题进行约定。下列有关该电脑交付的表述中,正确的是()。(2010年)
枣香醉人上午接到爷爷的电话,说给我酿了一罐醉枣,让我抽空回老家一趟。爷爷每年都会在枣子成熟的季节,亲手挑选出一颗颗饱满、红润的大枣,蘸上白酒,密封在玻璃瓶中。瓶口用稀稀的黄泥土封住。静置两三个月后,待枣香、酒香融为一体,合为一物,才有了
中国迈入老龄化社会,生育率低,人口结构老化,社保制度滞后已成为未来发展的一大隐患,以下属于我国人口老龄化加快的主要原因的有()。
()同志强调“要大力加强政法、公安部门的建设和工作,提高这些部门人员,的政治素质和业务素质。”
日本自然主义文学作品《破戒》的作者是()。
最新回复
(
0
)