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时间:2019-04-18
《2019高考英语复习练习题unit5canada_“thetruenorth”含解析新人教版》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit5Canada-“TheTrueNorth”李仕才【阅读理解插花】Sciencetextbooksaroundtheworldhavebecomesuddenlyoutofdate.Fournewchemicalelements(元素)havebeenaddedtotheperiodictable.Abigdecisionnowliesahead—elements113,115,117and118needtobegiventheirofficialnamesandsymbols.Newelementscanbenamedafteramythical(神话的)conce
2、pt,amineral,aplaceorcountry,aproperty(特性)orascientist.Thenameshavetobeuniqueandmaintain“historicalandchemicalconsistency”.Thismeansalotof“-iums”.“They’reLatinisingthename,”explainschemistAndreaSella.“Themostrecenttraditionistonamethemafterplacesorpeople.”Theplaceschosentendtobewheretheeleme
3、ntwasdiscoveredorfirstproduced.Noonehasyetnamedanelementafterthemselvesbutmanyelementsarenamedinhonourofimportantscientists.AlbertEinsteinwasgiveneinsteinium.Thiscanalsobeawayofrightingthewrongsofthepast.“LiseMeitnerwasreallythechemistwhospottednuclearfission(核裂变)butshewasneverreallyrecogni
4、sedforitbecauseshewasJewishandawoman,”saysSella.“Givinganelementanamethatremindsusofherisgreatlyimportant.”Thenamingprocessisn’tquick.Thescientistswhodiscoveredthemwillstartthingsoffbysuggestinganame.ButitwillbedowntotheInternationalUnionofPureandAppliedChemistry(IUPAC)toapproveit.Aspeciald
5、ivisionoftheUS-basedgrouphastoacceptthesuggestion.ThenthereisapublicreviewperiodoffivemonthsbeforetheIUPACgetsthefinalapproval.Onceit’sready,thenameisannouncedinthescientificjournalPureandAppliedChemistry.Naminganelementisnotjustaboutfunctionality.Namesarealwaysimportant.【文章大意】本文为一篇科普题材的说明文
6、,文章主要介绍了每当一个新元素被发现之时我们该如何对其进行命名,该用什么对其进行命名。1.WhatisthefunctionofParagraph1?A.Tointroducethetopic.B.Topresentafinding.C.Topointoutaproblem.D.Tocallforadecision.【解析】选A。段落大意题。通过综合分析该题应当选择A项“引出话题”。2.WhywasLiseMeitnermentionedinthenamingprocessinParagraph4?A.Topraiseher.B.Tobuildherreputation.C.
7、Tocorrectthewrongsofthepast.D.Toendracialdiscrimination.【解析】选C。细节理解题。根据第四段“Thiscanalsobeawayofrightingthewrongsofthepast.”可知“这也可能是一种纠正过去错误的方式”,因而该题选择C项。3.Whohasthefinalsayinthenamingprocessofanelement?A.Thescientistwhodiscoveredit.B.ThespecialdivisionofU
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