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
Reinventing the Table An earth scientist has rejigged the periodic table to make chemistry simpler to teach to students. (46)But
Reinventing the Table An earth scientist has rejigged the periodic table to make chemistry simpler to teach to students. (46)But
admin
2009-06-15
47
问题
Reinventing the Table
An earth scientist has rejigged the periodic table to make chemistry simpler to teach to students.
(46)But Bruce Railsback from the University of Georgia3 says he is the first to create a table that breaks with tradition and shows the ions of each element rather than just the elements themselves.
"I got tired of breaking my arms trying to explain the periodic table to earth students," he says, criss-crossing his hands in the air and pointing to different bits of a traditional table.(47)But he has added contour lines to charge density, helping to explain which ions react with which.
"Geochemists just want an intuitive sense of what’s going on with the elements," says Albert Galy from the University of Cambridge4,(48).
(49)He explains that sulphur, for example, shows up in three different spots -- one for sulphide, which is found in minerals, one for sulphite, and one for sulphate, which is found in sea salt, for instance.
He has also included symbols to show which ions are nutrients, and which are common in soil or water.(50).
A. There have been many attempts to redesign the periodic table since Dmitri Mendeleev2 drew it up in 1871.
B. Railsback has still ordered the elements according to the number of protons they have.
C. "I imagine this would be good for undergraduates."
D. Railsback has listed some elements more than once.
E And the size of element’s symbol reflects how much of it is found in the Earth’s crust.
F The traditional periodic table was well drawn.
选项
答案
E
解析
第六段的第一句讲到了符号。E也是讲符号,其他的选项都没有讲,因此应选E。
转载请注明原文地址:https://jikaoti.com/ti/q38sFFFM
本试题收录于:
职称英语卫生类基础题库职称英语分类
0
职称英语卫生类基础
职称英语
相关试题推荐
HereisaletterwhichcomplainsaboutthequalityoftheTVsetboughtinastore.Readtheletterandcompletethegiveninfor
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Face-to-facecomm
YouareAccountManagerofABCCompany.YourcompanyorderedacertainvalueofwoolensweaterfromNewStyleFabricCompanybut
Readthefollowingpassageandanswerquestions9-18.1.WhenChristopherColumbuslandedonAmerica’sshores,heencounteredco
ItiscommonforAmericanstohavedifferent"circlesoffriends"suchaschurchfriends,workfriends,orsportsfriends.【R1】__
1.Cellphonesareverycommonamongpeoplenowadays.Theyhavelongbeenmorethanjusttelephones.Theycantakeandsendphot
1.Thefilmisnotwithoutitsdrawbacks.Disappointment,failure,selfdoubt,regretsoveropportunities,missedormisusedthe
Peoplewhoareusedtotakingdrugsormedicinewhentheyareill,orwhoexpecttohaveanoperationinahospital,findtheid
Speaker1Speaker5
Speaker1Speaker4
随机试题
A.常发生在进油腻食物后B.过食、饮酒后发生C.腹痛在剧烈活动后发生D.持续性腹痛阵发加重E.转移性疼痛急性胰腺炎发病与饮食的关系
初孕妇,32岁,孕37周,有轻度妊娠高血压综合征。今晨不慎摔倒,2小时后自觉下腹不适,有少量阴道出血,急诊入院。检查:宫缩弱,持续30秒,间歇10分钟。宫高33cm,子宫软,右侧子宫有轻度局限性压痛,胎心率140次/分。最恰当的处理原则是
关于污泥厌氧消化的说法,以下描述正确的是()。
()国债发行方式是通过投标人的直接竞价来确定发行价格(或利率)水平。
羽毛球运动中,当来球在前场左侧距身体较近时,起动后左脚向身体左侧前方来球的方向迈出一小步,紧接着左脚用力蹬地,右脚经左脚向左前方跨出一大步击球,这里运用的是()。
基尼是美国加利福尼亚州的一个小女孩。她母亲双目失明,丧失了哺育孩子的基本能力;父亲讨厌她,虐待她。基尼自婴儿期起就几乎没听到过任何人说话,更不用说有人教她说话了。除了哥哥匆匆地、沉默地给她送些食物外,可以说,基尼生活在一间被完全隔离的小房里。她严重营养不良
()是指积极动员社会力量,借助社会力量的支持和帮助,与劳动教养人民警察共同教育个别劳动教养人员,帮助解决其思想问题和具体的家庭及社会问题的方法。
Hewas______admissionoftherestaurantfornotwearingatie.
A、Thejobmustnotruinyourtalents.B、Thejobmustbeabletoshapeyourpersonality.C、Thejobmustsetapatternoflife.D、
秦始皇是中国历史上杰出的政治家、战略家和改革家。13岁继承王位,39岁统一中国并自封“始皇帝”(FirstEmperor),建立第一个统一的、多民族、中央集权制国家。统一中国之后,他推行了一系列改革,比如统一度量衡单位和货币标准、统一文字(theChi
最新回复
(
0
)