山西省2023-2024学年七年级第一学期期中自主测评（11月）数学考试卷

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山西省2023-2024学年七年级第一学期期中自主测评（11月）数学考试卷试卷答案

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couldhelpexpertsbettertreatsickseastars,"Hewsonsays.32.Accordingtothetext,thestudywascarriedouwhen28.Whatcanweleamnaboutsea-starwastingdisease?A.psychologicalproblemsarosesharplyA.Bacteriaareconnectedwiththedisease.B.thenumberofcollegegraduatesdeclinedB.Aninfectionisthecauseofthedisease.C.AmericansexperiencedafriendrecessionC.Highertemperaturecanhelptreatthedisease.D.concernsaboutcollegecostsappearedD.Exposingstarfishtobacteriacancurethedisease.33.WhyaresomestudiesmentionedinParagraph4?29.Whichofthefollowingstatementsiswrongaccordingtothetext?A.Toprovideevidencefortheresearch.B.Toanalyzethereasonsforloneliness.A.Theyputnutrientsintothetubstohelpbacteriatogrowrapidly.C.Toshowtheimportanceofmarriage.D.TocomparedifferencesingenerationsB.Theyreducedtheoxygeninthewatertoseewhatwouldhappen.34.Inwhichcolumnofamagazinemaythistextappear?C.Theycomparedcopiotrophswiththebacterialivingwithoutoxygen.A.Entertainment.B.EducationC.Technology.D.Health.D.Theyobservedthebacterialivingwithhealthyandunhealthyseastars.35.Whatisthetextmainlyabout?30.WhatdoestheunderlinedsentenceinParagraph4mean?A.SocialproblemsintheAmericansociety.A.Thediseasecangreatlyaffecttheoceanenvironment.B.ReasonsforAmericans'lowmarriagerates.B.DyingseastarscanhelpbacteriatocausemoredeathsC.Linksbetweeneducationandsocialinteraction.C.ThedeathofseastarsmakesclimatechangegetworseD.DiscussionsaboutwhethertogetacollegedegreeD.Theeffectofseastarwastingisassmallasasnowball.第二节（共5小题；每小题2分，满分10分）31.Whichofthefollowingisasuitabletitleforthetext?根据短文内容，从短文后的选项中选出能填入空白处的最佳选项

选项中有两项为多余选项

A.AmysteriousvirusiscausingseastarsunabletobreatheHowtoThinkLikeaWisePersonB.BacteriaarestealingoxygenfromwaterandkillingseastarsWisdomistheabilitytomakesoundjudgmentsandchoices.36.So,whatdoesittaketoC.DyingseastarsbecomeabigconcernformarinebiologistsD.Climatechangemakesitmoredifficultforseastarstosurvivedistinguishwisepeoplefromtherestofthepack?Hereareseveralinsights.37DThepeoplewiththehighestwisdomscoresarejustaslikelytobe30as60.Itindicatesthatthenumberoflifeexperienceshaslittletodowiththequalityofthoseexperiences.Wisdomemergesnotfrom图ThereisatimewhenmanyAmericansquestionwhetheracollegedegreeisworthitscost.However,aexperienceitself,butratherfromreflectingthoughtfullyonthelessonsgainedfromexperience.DevelopingrecentstudyfoundAmericanswhocompletedcollegeoruniversityaremorelikelytohavefriendsandarewisdomisadeliberatechoicethatpeoplecanmakeregardlessofage.lesslonelythanthosewhoonlyfinishedhighschool.Balanceself-interestandthecommongoodDanielCox,directoroftheSurveyCenteronAmericanLife,saidthatingeneralAmericansareexperiencinga"friendrecession",meaningadeclineintheirnumberoffriends.Coxnoted"AmericansOnequalityofwisdomistheabilitytolookbeyondpersonaldesires.Thisdoe'meanwisepeoplearehavefewerclosefriendstodaythanwedidintheearly90s.Butmenandthosewithoutacollegedegreeself-sacrificing.Infact,well-beingandsuccessbothsufferifwe'retoofocusedonothersoronourselves.wereparticularlyaffectedbecausetheyseemtohaveexperiencedamuchmoredramaticdeclineoverthatWisepeoplerejecttheassumptionthattheworldisawin-lose,zero-sumplace.38Aimtounderstand,ratherthanjudge香period."TheCenterquestioned5054peoplethispastsummer.ItfoundAmericanswithacollegedegreefeelMoreoftenthannot,manyofusjudgeothersactionssothatwecansorthemintocaterieofgodmoresociallyconnectedandaremoreactiveintheircommunitiesthanpeoplewhodidn'tgotocollege.Asandbad.39.Overtime,thisemphasisonunderstandingratherthanevaluatingbringsanadvantageinpredictingothers'actions,enablingwisepeopletomakebetterdecisionsaresult,thosewhocompletedcollegereportfeelinglesslonely.PreviousresearchshowedthatAmericanswhodidn'tgotocollegearelesslikelytomarry.A2012Focusonpurposeoverpleasurestudyfoundthatcollege-educatedwomenweremuchmorelikelytogetmarriedthanwomenwhodroppedIttusoutthatwisepeopledon'texperiencemorepositiveemperhapsbecauseisqreoutofhighschool.A2013studyofpeoplebornbetween1957and1964foundthatbothmenandwomencriticalself-reflectionandalong-termview.40Fromtimetotime,whatmakesushappywillweighwhodidn'tfinishhighschoolwerelesslikelytomarrythanthosewithmoreeducation.lessthanourquestformeaningandsignificance.Today,65percentofcollege-educatedAmericansoverage25aremarried.About50percentofpeopleA.Chooseyourwisdomdeliberatelywithahighschooldiploma,orwhodroppedoutofhighschool,aremarried.ThosenumbersweredifferentB.It'savirtuedesiredbynearlyeveryonein1990,whenmarriageratesamongthecollegeeducatedwereat69percent,comparedwith63percentforC.StartdevelopingyourwisdomrightnowD.Itseemslikeanextremelytoughproblemthosewhodidnotgotocollege,saysaPewresearchreport.TheAmericanCommunityLifeSurveyfoundaround1in10collegegraduatessaytheyhavenoeloseE.Theyfindwaystobenefitothersthatalsoadvancetheirownobjectivessocialconnections.ThatnumberrisesamongAmericanswithoutadegree,wherealmost1in4saytheyF.However,there'saclearpychologicalbenefit:anersofpupeniC.Wisepeoplereithiperatingmrelikedetectivetepintebehavihavenoclosefriends.英语6-3（全卷共4页）B

分析对5个命题分别进行判断，即可得出结论．

解答解：①命题“若α=$\frac{π}{4}$，则tanα=1”为真命题，由互为逆否命题的等价性可知，其逆否命题是真命题，故①错；
②命题p：?x∈R，sinx≤1．则￢p：?x₀∈R，使sinx₀＞1，故②对；
③由于sinx+cosx=$\sqrt{2}$sin（x+$\frac{π}{4}$）≤$\sqrt{2}$，故命题p为假命题，命题q：△ABC中，A＞B?a＞b?sinA＞sinB，故命题q为真命题．则（￢p）∧q为真命题，故正确．
④m=1时，不成立，故不正确；
⑤对空间任意一点O和不共线的三点A、B、C，若$\overrightarrow{OP}$=2$\overrightarrow{OA}$-$\overrightarrow{OB}$+$\overrightarrow{OC}$，∵2-2-1=-1≠1，∴根据共面向量定理P、A、B、C四点不共面，故错误．
故选：C．

点评本题考查简易逻辑的知识：四种命题的真假、命题的否定、充分必要条件的判断、共面向量定理，属于中档题．