［高二年级］乌江新高考协作体2023-2024学年（下）第一阶段性学业质量联合调研抽测数学.考卷答案试卷答案,我们目前收集并整理关于［高二年级］乌江新高考协作体2023-2024学年（下）第一阶段性学业质量联合调研抽测数学.考卷答案得系列试题及其答案，更多试题答案请关注微信公众号：考不凡/直接访问www.kaobufan.com(考不凡)
［高二年级］乌江新高考协作体2023-2024学年（下）第一阶段性学业质量联合调研抽测数学.考卷答案试卷答案
以下是该试卷的部分内容或者是答案亦或者啥也没有，更多试题答案请关注微信公众号：考不凡/直接访问www.kaobufan.com(考不凡)
InMay2016,theAmericanbisonasnamedtheNatonalMamaoftheUnitedSe,officaooftheUnitedStates.15.Whatdoesparagraph1intendhow?教学A.Theappearanceofbuffalo.扎记C.Thehabitatofbisonandbuffalo16.Whatcanbeknownaboutbison?B.Thecurrentsituationofbison.A.Theyusuallyweigh2,000poundsD.Thedifferencesbetweenbisonandbuffalo.C.Bullsliveapartfromtheircalvesmoofthetime.7.TheunderindwordnpgreerB.Calves'humpsbegintogrowafterbirth.A.areaggressiveB.preferplantsD.Acowcangivebirthtomorethanacalfatatime..WhatcausedbisontogomoexintntheateineteC.weightoomuchA.Fights.D.eatalotB.Diseases.【答案与解析】C.Climatechange.本文主要介绍了野牛的相关信息
D.Settlers'killing.oplego5,D通读第1段可知，本段主要介绍了野牛和水牛两者的差异
6C根据第2段第4句可知，在一年的大部分时问里，公牛和母牛以及它们的小牛是分开的
.B根据第4段中的whichmeanstheyfeedonberriesandotherpans可知，grazers指的是食草功物，18D根据倒数第2段第2句可知，到了19世纪后期，野牛被移民猎杀，几近天绝，第三部分完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B,C和D四个选项中，选出可以填入空白处的最佳选项
It'ssadthatmanyofusfindourselvesjusttoobusytocontributetoourcommunities.Foranme.believeditcosttoomuch19,moneyandenergy.ButallthatchangedwhenI20mygood-deed-a-daypojetMydaughter,Emily,wasmyprimary21.Iwantedtoshowherwecoulddolittlethingstohelpothers,andbe22Thefirstweek,Iwasn'tsureifIcould23it.IsurfedtheInternetforideas.Oneday,I24ablindmaninthesubwaystation.Hesmiledashe25me.Anotherday,Ibroughtflowersfrommygardentoa26nursinghome,hopingIwasarousing27inkindnesswhereIlive.Afterjustafewdays,IfounditeasierthanIhad28IknewIwasmakinga29.Everyeveningatthedinnertable,I30thatday'sgooddeedtoEmily.Emilybegan31whatI'dstarted.Onawalkhomefromschool,shemarchedovertoaneighbour'spotofroses,whichhadfalleninthewind,andsetit32."Thatwasmygooddeedfortheday!"shesaidmerrily.Anotherday,shehelpedmecollectdonationsfromourneighboursforthe33bank.Aswedroveawayafter34thefood,Emilyannounced35thatshewantedtoworkthereoneday.nditsBythelastweek,IknewI'dchanged.Atfirst,Ihadn'tbeenentirely36thatIcoulddoagooddeedeveryday.Nowitwaspracticallysecond37.IfeltagreaterresponsibilitytotakeactionwhenIsawaneed,38lookingtheotherway.IfeltasthoughI'dawakened,somehow.19.A.spaceD.experienceB.timeC.wisdom20.A.improvedD.startedB.rememberedC.advertisedordorD.celebration21.A.satisfactionB.operationC.inspirationD.honest22.A.happyC.luckyB.cleverD.appreciate23.A.getB.manageC.putD.guided24.A.watchedC.taughtB.consultedD.rewarded25.A.consultedC.thankedB.greetedC.desertedD.popular26.A.localB.distantC.interestD.praise27.A.awarenessB.mercyC.preparedD.required28.A.plannedB.expectedC.differenceD.fortune29.A.discoveryB.mistakeC.announcedD.reminded30.A.describedB.recommended◇金太阳AB创新卷·英语（滚动卷2022.11.1117:53
分析①当2x=2kπ+$\frac{π}{2}$，解得x=kπ+$\frac{π}{4}$（k∈Z）时，sin2x取得最大值2，函数y=1-2sin2x取得最小值-1；
②当2x=2kπ-$\frac{π}{2}$，解得x=kπ-$\frac{π}{4}$（k∈Z）时，sin2x取得最小值-2，函数y=1-2sin2x取得最大值3．
解答解：y=1-2sin2x的值域为[-1，3]，
函数的最值情况分类讨论如下：
①当2x=2kπ+$\frac{π}{2}$，解得x=kπ+$\frac{π}{4}$（k∈Z）时，
sin2x取得最大值2，函数y=1-2sin2x取得最小值-1；
②当2x=2kπ-$\frac{π}{2}$，解得x=kπ-$\frac{π}{4}$（k∈Z）时，
sin2x取得最小值-2，函数y=1-2sin2x取得最大值3．
故答案为：[-1，3]；kπ-$\frac{π}{4}$（k∈Z）；kπ+$\frac{π}{4}$（k∈Z）．
点评本题主要考查了三角函数的图象和性质，涉及函数最值以及取最值时对应自变量值的确定，属于基础题．
