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太原市第五十六中学校2025届初三年级上学期入学考试试题(数学)试卷答案
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综合能力评估试题(2)参考答案及部分解析参考答案1-5BCBCA6-10ABBAC11-15ABCBC16-20CABAC21-25DCBCC26-30CAAAC31-35DCABD36-40DGCAB41-45DBCBD46-50ADCDA51-55CACDB56.created57.which58.originally59.as60.tosolve61.its62.a63.countries64.played65.traditional写作第一节Onepossibleversion:DearVera,I'mwritingtorecommendHi,Mom,whichisregardedasoneofthemostsuccessfulcomediesinChina.DirectedbyJiaLing,oneofthetopwomencomediansinChina,thistime-travelcomedystarsJiaasadevoteddaughter,whoisdeeplysaddenedbyhermother'saccidentaldeathandfindsherselftransportedbackto1981,whereshemeetshermotherandattemptstochangeherfateThefilmhasbeenhighlypraisedforitsinterestingstoryandheartfeltemotions.It'sworthyofyourattention.Hopeyouenjoyit!Yours,LiHua第二节Onepossibleversion:Iclosedmyeyes,coveredmyears,andshrankaslowasIpossiblycouldinmychair.Afterafewseconds,though,ifoundenoughcouragetouncoveroneearandlookthroughahalf-openeyeThat'swhenIsawtheexpressionofgreatjoyonmymom'sface.Shewashavingsomuchfun.Icouldn'thelpsmiling.Myclassmatesclappedandcheered,andIheardsomeonesay,"Wow!Arizona'smotherisprettytalented!"NotonlydidmymomturnouttobemorethanalittleOKatperforming,butshewasalsogoodatteachingusthesongandthedancesteps.Bythetimeofthefair,Iwasactuallyproudofherforputtingherselfoutthereforus."I'mreallygladyouhelpedmyclasswiththeperformance,"IsaidtomymomaswedrovehomefromWinterFair.Mymomreachedbackandheldmyhand."Thanksforsayingthat,Arizona.Icanseewhyyoumighthavebeenembarrassed,butIhadsuchagreattime."部分解析阅读第一节A篇
分析利用向量共线定理即可得出．
解答解：∵向量$\overrightarrow{a}$=（2，x）与向量$\overrightarrow{b}$=（4x+2，3）方向相同，
∴x（4x+2）-6=0，
化为2x2+x-3=0，
解得x=-$\frac{3}{2}$，1．
当x=-$\frac{3}{2}$时，$\overrightarrow{b}$=（-4，3），$\overrightarrow{a}$=$（2，-\frac{3}{2}）$，$\overrightarrow{b}$=-2$\overrightarrow{a}$，方向相反，舍去．
∴x=1，
∴$\overrightarrow{a}$+2$\overrightarrow{b}$=（2，1）+（6，3）=（8，4），
故答案为：（8，4）．
点评本题考查了向量共线定理、方程的解法，考查了推理能力与计算能力，属于中档题．
