英语试卷第Ⅰ卷一.阅读理解阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。ACoronaviruses(冠状病毒)arealargegroupofviruses.Theyconsistofacoreofgeneticmaterial(遗传物质)surroundedbyanenvelopewithproteinspikes(蛋白棘突).Thisgivesittheappearanceofacrown.CrowninLatiniscalled“corona”andthat’showthesevirusesgettheirname.Inthistext,we’lltakeaquicklookatwhat’scurrentlyknownaboutthevirus.Covid-2019The2019NovelCoronavirus,firstreportedDecemberinWuhan,centralChina’sHubeiProvince,hasquicklyspreadacrossthecountryandaroundtheworld.Itinitiallyoccurredinagroupofpeoplewithpneumonia(肺炎)who’dbeenassociatedwithaseafoodandliveanimalmarketinthecityofWuhan.Intermediatehosts:TheCovid-2019mayoriginateinbats,ateamledbyrenownedChinesevirologistShiZhenglisaidearlier,whiletheintermediaryhostremainsunknown.Incubationperiod(潜伏期):usually1-14days.Infection:Virusmayspreadbeforesymptomsshow.SARS-CoVTheSevereAcuteRespiratorySyndrome(SARS)coronaviruswasfirstidentifiedinChinain2003.Intermediatehosts:Batsaretheoriginalhost.Civetcatsserveasanimportantintermediarythatcarriesvirusfromthewingedmammaltohumans.Incubationperiod:2-7days.Infection:Virusspreadaftersymptomsshow.MERS-CoVTheMiddleEastRespiratorySyndrome(MERS中东呼吸综合征)coronaviruswasfirstidentifiedinSaudiArabiain2012Intermediatehosts:MERS-CoVwastravelledfromdromedarycameltohumans.Incubationperiod:2-14days.Infection:Virusmayspreadbeforesymptomsshow.1.WhatmightbetheintermediatehostsoftheCovid-2019?A.Bats.B.MosquitoesC.Camel.D.Unknownyet.2.Whichkindofcoronavirusesspreadsaftersymptomsappear?A.SARS-CoV.B.MERS-CoV.C.TheCovid-2019.D.AllCoronaviruses.3.Whatcanwelearnaboutcoronaviruses?A.Batsaretoblamefortheoutbreakofallthethreecoronaviruses.B.TheCovid-2019,SARS-CoVandMERS-CoVarealllistedascoronaviruses.C.Mers-CovwerefirstidentifiedinChina.D.SARS-CovhasalongerincubationperiodthanMers-cov.【答案】1.D2.A3.B【解析】【分析】这是一篇说明文，文章介绍了包括新型冠状病毒在内的三种影响较大的冠状病毒。【1题详解】细节理解题。根据Covid-2019部分第二段“Intermediatehosts:TheCovid-2019mayoriginateinbats,ateamledbyrenownedChinesevirologistShiZ