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湖南省2024年上学期高二期末调研考试试题(数学)试卷答案
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海南省2022一2023学年高三学业水平诊断（一）英语·答案听力原文Text1W:Hey,Terry,havealltheplayersgothere?M:Mostofthemhavearrived.Don'tworry.Therearestill20minutesleftbeforethematch.Text2W:Mygrannyissuchakind-heartedperson.Sheiswillingtohelpothers.M:Shedoeshaveaheartofgold.Text3W:Mr.Wang,canIaskforleaveformysonthisafternoon?M:Allright,butIwonderwhat'swrongwithhim.W:Hehasahightemperaturetoday.Iwanttotakehimtohospital.Text4W:Ican'tbelieveyouleftthepartyafteronlyfifteenminutes!Andyoudidn'tevensaygoodbyetoanyone!M:ItoldyouIwasshyinfrontofstrangers,butIguessyoujustdidn'tknowhowshyIwasText5W:Howdoyouusuallyspendyourweekends?M:Iusuallydosomewashingandcleaninginthemorning.IntheafternoonIliketogoouttodosomeshoppingortovisitsomefriends.Text6W:Hi,doyouhaveanyticketsfortheshowtonight?M:Sorry,they'reallsoldout.W:Well,doyouhaveanyfortomorrow?M:Yes,wehaveticketsfortheafternoonshow.Itstartsataquartertofourintheafternoon.W:OK.I'llbooktwotickets.Howmuchisit?M:Fivedollarsaticket.Well,wherewouldyouliketosit?W:Doyouhaveanythinginthemiddlesection?Iwantagoodview,butsittingtooclosehurtsmyeyes.M:Certainly.W:Hereisthemoney.Thankyouverymuch.Bye.Text7M:Whatdidyoudoyesterday?W:Iwenttoplaytennisinthepublicpark.M:Howoftendoyouplaytennis?W:Twiceaweek.Howaboutyou?M:Iseldomplaytennis.Ipreferfootballandbasketball.W:Butitisverydifficulttogatherateamofplayerstogether.M:Iusuallyplaywithmyschoolmates.一1
分析作函数f（x）=$\left\{\begin{array}{l}{{2}^{x}（x≤0）}\\{{x}^{2}-2x+1（x＞0）}\end{array}\right.$的图象，从而由数形结合求解．
解答解：作函数f（x）=$\left\{\begin{array}{l}{{2}^{x}（x≤0）}\\{{x}^{2}-2x+1（x＞0）}\end{array}\right.$的图象如下，
，
g（x）=f（x）-k有3个零点可化为f（x）与y=k有三个不同的交点，
结合图象可知，
0＜k＜1；
故选：C．
点评本题考查了分段函数的应用及数形结合的思想应用．
