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
44
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
B
解析
第三段的第一句话是这么说的:“在给学生解释元素周期表时我的手臂都要断了,”他这么说时在空中来回交叉双手,指点传统周期表中不同的元素。这一句话是讲Bruce Railsback重新制作元素周期表的原因。从主题发展来看,这句话似乎跟上文连不上,但这是一篇报道,插入了一些背景信息和其他人的评论。从第二段的最后一句话来看,B比较合适,因为都是讲元素。B说的是:Railsback仍然按照元素所有的质子数排列元素。注意:D也是讲元素。但是B中有still(仍然)这个词,它是衔接第二段的最后一句话的。
转载请注明原文地址:https://kaotiyun.com/show/Ql2d777K
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
Youareatourguideinatravelagencyandarerequestedtomakeawrittenannouncementtoallthetouristsforthedetailsbel
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
Readthefollowingpassageandanswerquestions9-18.1.WhenChristopherColumbuslandedonAmerica’sshores,heencounteredco
Amulticulturalpersonissomeonewhoisdeeplyconvincedthatallculturesareequallygood.【R1】______Andmostlikelyhehasbe
1.Whoknowsbetterthanyourcustomerswhereyouroperationscanbeimproved?Today,progressivefirmsincreasinglyrelyonadv
CarsaccountforhalftheoilconsumedintheU.S.,abouthalftheurbanpollutionandonefourththegreenhousegases.Theyta
Formuchofthepastdecade,AmericanandBritishscientistshavebeenannoyedbythephenomenonknownastheFrenchParadox.Nu
BillBrysonIwasbornintheU.K.,butIhavewrittenseveraltravelbooksaboutChina.IlivedinBeijingwithmywifean
Inordertosurvivemanneedstoconsumefoodandwater.
随机试题
利息、股息、红利属于
A.桑白皮汤B.麻杏石甘汤C.苏子降气汤D.定喘汤E.泻白散治疗热哮发作期,应首选
下列关于“起诉不停止执行”原则表述正确的是:()
物业的所有权与物业的使用权相分离是物业管理社会化的必要前提,现代化大生产的社会专业分工则是实现物业管理社会化的必要条件。()
张某在足球世界杯期间参加下列活动所获得的收益中,应当缴纳个人所得税的有()。(2014年)
《国家中长期教育改革和发展规划纲要(2010~2020年)》中把()作为教育工作的根本要求,把提高质量作为教育改革发展的核心任务。
下列哪一项是西周时期天子和诸侯国所设立的大学?()
大多数孩子很难解释清楚一个表示他当前看不到或摸不着的物体的词的具体含义。但是,这些孩子却能够很好地运用这些词来表达他们的意图和情感。可见,懂得一个词的意思并非一定要依赖于对这个词的含义做出清楚的解释。以下哪项原则如果被接受,能够为上述结论提供最好的理由?
1 Iwillnowteach,offeringmywayoflifetowhomsoeverdesirestocommitsuicidebytheschemewhichhasenabledmetobeat
Oneofthequestionscomingintofocusaswefacegrowingscarcityofresourcesintheworldishowtodividelimitedresources
最新回复
(
0
)