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
考研
Reinventing the Table An earth scientist has rejigged the periodic table to make chemistry simpler to teach to students.
Reinventing the Table An earth scientist has rejigged the periodic table to make chemistry simpler to teach to students.
admin
2021-04-06
68
问题
Reinventing the Table
An earth scientist has rejigged the periodic table to make chemistry simpler to teach to students.
41 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. 42 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. 43
44 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 slat, for instance.
He has also included symbols to show which ions are nutrients, and which are common in soil or water. 45
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 to the number of protons they have.
C. "I imagine this would be good for undergraduates."
D. Raisback 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
C
解析
第四段是剑桥大学的Albert Galy对Bruce Railsback重新创造的元素周期表的评论。评论常常用原话。引号表明C是原话。
转载请注明原文地址:https://kaotiyun.com/show/yc1Z777K
0
考研英语一
相关试题推荐
OnJan.17,1995,Kobewashitbya6.9-magnitudequake.TheGreatHanshinEarthquakekilled6,400people.Damagewasestimated
Thefollowingparagraphsaregiveninawrongorder.ForQuestions1-5,youarerequiredtoreorganizetheseparagraphsintoac
SendingaGiftWritealetterofabout100wordsbasedonthefollowingsituation:YouwanttosendyourfriendMurphya
【F1】Americansnolongerexpectpublicfigures,whetherinspeechorinwriting,tocommandtheEnglishlanguagewithskillandg
Theroughguidetomarketingsuccessusedtobethatyougotwhatyoupaidfor.Nolonger.Whiletraditional"paid"media—sucha
"Flexibility"hasbecomeakeymetaphorpotentlyvivifyingavarietyofcontemporarylifediscourses.【F1】Ascapitalbecomesmore
AncientGreekphilosopherAristotleviewedlaughteras"abodilyexerciseprecioustohealth."But【C1】______someclaimstothec
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Coulditbethatexcessfatisnot,byitself,aserioushealthriskforthevastmajorityofpeoplewhoareoverweightorobese
随机试题
有关肝片吸虫卵的描述,不正确的是
患者女性,26岁。因心悸、多汗、消瘦、下肢无力就诊。查体,甲状腺双叶Ⅱ°肿大。心电图示窦性心动过速。实验室检查FT3、FT4升高,TSH降低。如果该患者在131I治疗后2周患上呼吸道感染,之后出现发热(体温39℃)、心慌(HR160次/分)、烦躁不安、
对有营业收入的非经营性项目进行财务分析时,应以营业收入抵补下列支出;①生产经营耗费②偿还借款利息③缴纳流转税④计提折旧和偿还借款本金
公司分立的动机主要包括()。
下列()不属于汇率风险VAR计算模型。
水盐代谢是指人体内调节水盐平衡的机构,保持水和氯化钠的摄入量和排出量的动态平衡,并维持体内含量相对恒定。脱水和水肿是水盐代谢功能失调的两种情况。根据上述定义,下列属于水盐代谢的是:
学生通过学习“0和正整数”掌握“数”的概念,后来又学习了“负数”的概念,重新认识了“数”的概念。这种学习属于
按数据流的类型,结构化设计方法有两种设计策略,它们是变换分析设计和【】。
A.ModerntechniquesenablethesurgeontooperatesuccessfullyuponallpartsofthehumanbodyB.Surgeonsareespeciallytrai
Beingfitismoreimportantthanbeingthin.Researchshowsthatoverweightorevenobese(肥胖)menwho【C1】______havealowerdeat
最新回复
(
0
)