2023-2024学年湖北省高二考试4月联考(24-398B)数学.考卷答案试卷答案,我们目前收集并整理关于2023-2024学年湖北省高二考试4月联考(24-398B)数学.考卷答案得系列试题及其答案，更多试题答案请关注本网站↓↓↓
2023-2024学年湖北省高二考试4月联考(24-398B)数学.考卷答案试卷答案
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DCanexerciseduringchildhoodprotectyouagainstmemorylossmanyyearslater?Exerciseearlyinlifeseemstohavelifelongbenefitsforthebrain,inratsatleast."Thisisananimalstudy,butitshowsthatphysicalactivityatayoungageisveryimportant-notjustforphysicaldevelopment,butforthewholelifelongtrackofcognitivedevelopmentduringageing,saysMartinoftheUniversityofToronto,Canada."Inhumans,itmayputofftheappearanceofAlzheimer's(阿a兹海默症)symptoms,possiblytothepointofpreventingthem.“Martin'steamdivided80youngmaleratsintotwoequalgroups,andplacedrunningwheelsinthecagesofonegroupforaperiodofsixweeks.Aroundfourmonthslater-whentheratshadreachedmiddleage-theteamtaughtalltheratstoconnectanelectricshockwithbeinginaspecificbox.Whenplacedinthebox,theyfrozewithfear.Twoweekslater,theteamtestedtheratsinthreesituations:exactlythesameboxinthesameroom,thesameboxwiththeroomarrangeddifferently,andacompletelydifferentboxinadifferentroom.Theratswithoutaccesstoarunningwheelwhentheywereyoungnowfrozethesamepercentageoftimesineachofthesesituations,suggestingtheycouldn'trememberwhichonewasdangerous.Butthosethathadbeenabletorunintheiryouthfroze40to50percentlessinbothchangedboxsettings."Theresultssuggesttheamountofphysicalactivitywhenwe'reyoung,atleastforrats,hasinfluenceonbrainandcognitivehealth-intheformofbettermemories-whenwe'reolder,"saysArthurKramerofNortheasternUniversityinBoston,whohasfoundthat,inhumans,exerciseimprovesthegrowthofnewbraincells.32.ThestudyshowsthatA.exercisewhenyoungcanpreventmemorylosswhenolderinratsB.physicalactivityisimportantforphysicalhealthC.usingtherunningwheelsisofbenefittotherats'growthD.physicalactivitycanpreventhuman'sAlzheimer'ssymptoms33.Whatdoestheunderlinedword"it"inParagraph2referto?A.studyB.developmentC.benefitD.exercise34.HowareParagraph3and4mainlydeveloped?A.Byanalyzingcauses.B.Bygivinganexample.C.Byshowingdifferences.D.Bydescribingtheprocess.35.Whatistheauthor'sattitudetowardstheanimalstudy?A.Surprised..B.Critical(批判性的).C.Objective(客观的).D.Doubtful.第二节（共5小题：每小题2.5分，满分12.5分)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
Aeyouthinkingabouttravelingalone?Youmusthaveamillionquestions:Whereshouldyougo?Willtherebesomeonetotalkto?36Andisitallrighttotravelalone?Infact,travelingaloneisnotasscary()asitseems.HerearesomegoodtipsChooseaplacewhereyoufeelcomfortableandsafeTruthbetold,travelingaloneforthefirsttimeismoreabouttheexperiencethanthedestination.37Itcouldbesomewhereclosetohomeorsomewhereyou'vealreadybeenwithfriends.Makeaplan高一英语学科试题第5页（共8页）
分析根据棱锥，圆锥的几何特征，逐一分析四个答案的真假，可得结论．
解答解：正八面体的各个面都是三角形，但不是三棱锥，故A错误；
以锐角三角形的一边所在直线为旋转轴，其余两边旋转形成的曲面所围成的几何体是两个圆锥形成的组合体，故B错误；
正六棱锥圆锥的顶点与底面圆周上的任一点的连线都是母棱锥的侧棱长一定大于底面多边形的边长，故C错误；
圆锥的顶点与底面圆周上的任一点的连线都是母线，故D正确；
故选：D
点评本题以命题的真假判断与应用为载体，考查了棱锥和圆锥的几何特征，熟练掌握棱锥和圆锥的几何特征，是解答的关键．
