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
49
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
D
解析
第五段需填入主题句。主题句常常是概括性的。从第五段提供的信息来看,sulphur(硫磺)这个元素在三个地方出现,因此D是正确的。D说的是:有些元素Railsback列了一次以上。
转载请注明原文地址:https://kaotiyun.com/show/ml2d777K
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
Somepeopleholdthatoldpeopleshouldbetakencareathome,whileothersthinktheyshouldbeplacedinoldpeople’shouse.W
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Facialexpressionscarrymeaning,determinedbycontextsandrelationships.【R1】______Awoman’ssmileatapolicemanwhoisabou
"WelcometoU.S.A.!Majorcreditcardsaccepted!"Bythemilliontheyarecoming—nolongerthetired,thepoor,thewretch
"WelcometoU.S.A.!Majorcreditcardsaccepted!"Bythemilliontheyarecoming—nolongerthetired,thepoor,thewretch
CONVERSATION2(Questions5-8)DiscountsforGymCoursesWehavediscountsfor【L5】______students.For
Speaker1Speaker3
PrivacyWorryMayKeepHIVPatientsfromTherapyPatientsinfectedwithHIVareoftenconcernedabouttheconfidentialityofthe
随机试题
哮病的发生为痰伏于肺,其诱因是下列哪项因素
A.上牙槽前神经B.上牙槽中神经C.上牙槽后神经D.鼻腭神经E.腭前神经哪一神经分布于上颌尖牙、第一、二前磨牙和第一、二、三磨牙的腭侧牙龈及黏骨膜
下列有关维生素C注射液的叙述错误的是
当事人对当场作出的行政处罚决定不服的,可以依法申请除法律另有规定的外,违法行为在二年内未被发现的,不再给予
几乎是在同一瞬间内,通过全站仪可以得到()。
假设某公司的资本来源包括以下两种形式:(1)100万股面值为1元的普通股。假设公司下一年的预期股利是每股0.10元,并且以后将以每年10%的速度增长。该普通股目前的市场价格是每股1.8元。(2)面值为800000元的债券,该债券在3年后到期,每年末要按
判断文学与非文学的标准不包括下列哪项?()
小甲和小乙同为6岁。某日放学后,两人觉得无聊,便相约到山上采摘野果子。由于山比较陡峭且碎石特别多,两人上山时每踩一步都踩下不少碎石滚下山去。农民丙刚好在山下的田里耕种,被从山上滚下来的石头砸伤,花去医疗费10000元。请问,10000元由谁承担?(
Headmiredthebeautyoftheuniversitywherethosewhohateignorancestruggletoknow.
A、Manylanguages.B、Prettywell.C、5languages.D、IcanspeakEnglishfluently.C题目问的是“你会说几种语言?”只有C“五种”是符合题意的,故选C。
最新回复
(
0
)