UNIT3单元主题训练Ⅰ.阅读理解(2022·汕头高三检测)IfyoustoparandompersononthestreetinChina,there'saprettygoodchancethattheirsurnamewouldbeeitherWang,Li,Zhang,LiuorChen.That'sbecausethosearethefivemostcommonsurnamesinChina—sharedby30%ofthepopulation.Andthevastmajorityofthepopulationsharejust100ofthosesurnames.Incomparison,theUnitedStatesreported6.3millionsurnamesinits2010census.Thereareafewreasonsforthis:ChinaislessraciallydiversethancountriessuchastheUS,whereawealthofminoritygroupsincreasesurnamediversity(多样性)．Italsohastodowithlanguage;youcan'tjustaddarandomstroke(音节)toaChinesecharacterandcreateanewsurname.Butthere'salsoanotherfactoratplay:technology.WithChinaroaringintothedigitalage,nearlyeverythinghasmovedonline—frommakingappointmentstobuyingtraintickets.ThemainproblemisthatnotallChinesecharactershavebeencodedintocomputersystems.Thatmeantaworldoftroubleifyouhappenedtohaveararecharacterinyourname.Asof2017,upto60millionChinesecitizensfacedthisproblem,accordingtoXinhua.Peoplewithrarecharactersintheirnames,whicharen'tcompatible(兼容的)withexistingcomputersystems,cangetleftbehind—pushingmanytochangetheirnamesforthesakeofconvenience,evenifitmeansabandoningcenturiesofheritageandlanguages.Totrytoaddressthis,expertshaveincreasedthedatabasefrom32,000charactersto70,000characters,accordingtothegovernment.They'restillworkingtoexpandittoincludemorethan90,000characters,saidChenJiawei,anassociateprofessoratBeijingNormalUniversity.语篇解读：本文是一篇说明文。文章介绍了中国汉语言文化中的姓氏文化。1．WhatcanbelearnedfromthecomparisonaccordingtoParagraph1?A．TherearefewercommonsurnamesinChina.B．Chinesepeoplelikesharingthesamesurname.C．TheUnitedStatesownsthemostsurnamesintheworld.D．6.3millionsurnamesinChinahavebeenshareduntilnow.解析：选A推理判断题。根据第一段第二、三句可推知，在中国普通姓氏较少。2．Whichonedescribessurnamediversityproperly?A．NewChinesesurnamesareeasytocreate.B．Surnamediversitytotallydependsontechnology.C．Minoritygroupscanincreasesurnamediversity.D．Surnamesincomputersystemsareregularlychanged.解析：选C细节理解题。根据第二段第一句可知，少数民族可以增加姓氏的多样性。3．Whatmay