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
86
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 Georgia 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 Cambridge.(48).
(49)He explains that sulphur, for example, shows up in three different spots -- one for sulphide, which is found in minerals, one for sulphitr, 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 Mendeleev drew it up in 1871.
B Railsback has still ordered the elements according lo 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:“在给地学学生们解释元素周期表时我的手臂都要累坏了,”他说时在空中来回移动他的两只手,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“仍然”(still)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/fFhd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
BedwettingMillionsofkidsandteenagersfromeverypartoftheworldwetthebedeverysinglenight.It’ssocommonthatthere
AllpatientsinthestudyrefusetoreceiveanytreatmentbecauseofthepossibilitytoexposetheirHIVstatus.Mostpatients
"Othercountrieshaveaclimate;inEnglandwehaveweather".Thisstatementsuggeststhat______.Theword"lands"inthelast
Awell-designedkitchenshouldbemodern,beautifulandpracticalatthesametime.Meansofsavinglabor,appliancesshouldbe
Therearealtogether13dragstreatingsleepdisordersintheUnitedStates.Theappearanceofoneoranothersideeffectafter
ReinventingtheTableAnearthscientisthasrejiggedtheperiodictabletomakechemistrysimplertoteachtostudents.(46)But
LittleLadyStartsBigWarHarrietBeecherStowehadpouredherheartintoheranti-slaverybook"UncleTom’sCabin."(46)Thepu
AMakingfriendswithnewacquaintancesBCloselinkbetweencompanionshipandbelongingnessCHowtosatisfyotherpeople’s
Peopleinthepastheldthatthedifferencebetweenlifeanddeath______.Whenapersonshouldbeconsidereddeadiscurrently
Ifroundwormsareremovedfromthesoilandplacedinaliquid,theythrashhelplesslyaround.
随机试题
“康乾盛世”指的是清朝的哪三朝()
按照亲属的分类和罗马法的亲等计算法,己身与姐夫、妹夫是()
患儿女,6岁,近两周发热,伴肘膝大关节不规则肿痛。查体:发现心音低钝,心率176次/分,肝于右肋下可触及3cm。实验室检查:抗“O”>500U,血沉65mm/h。诊断为风湿热,并伴有心功能不全,治疗需给洋地黄制剂,剂量应如何掌握
患者,女,54岁。主因进食油腻食物后突发右上腹疼痛10小时,伴向肩背部放散急诊入院,入院诊断:慢性胆囊炎急性发作,胆囊结石。夜班护士小王向患者询问病史准备书写护理病历。此时的护患沟通大多为
A.渗透效率B.溶解速率C.胃排空速度D.解离度E.酸碱度 生物药剂学分类系统根据药物溶解性和肠壁渗透性的不同组合将药物分为四类。阿替洛尔属于第Ⅲ类,是高水溶性、低渗透性的水溶性分子药物,其体内吸收取决于(
下列中华人民共和国境内的主体中,适用劳动合同法调整的有()。
团体全包价旅游一般是采取()的方式,且有组织地按预定行程计划进行的旅游形式。
GimblespeakshighlyofLongakerinthat______.WecaninferfromParagraph3that______.
∫max{x+2,x2}dx=_________.
TakeataxiinShanghaiandyouwillpaymorethanyouwouldforarideof【1】______.distanceinBeijing.
最新回复
(
0
)