[今日更新]四川省2024届高考冲刺考试(三)3.物理试卷答案

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第二节（共5小题；每小题2.5分，满分12.5分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项

选项中有两项为多余选项

Manystudieshaveshownthathigherproteinconsumptioncanhelppeopleloseweightandimprovetheiroverallhealth.36Grainswillhelpyoudiveintotheriverofprotein.Grainconsumptionistypicallyrestrictedonahigh-proteindiet,sobecertainthegrainsusersdoconsumeareuptothetask.Wholegrainsarebest.37Makesurethewholegrainitemsyoubuyaren'tloadedwithsugarorfatbeforeyoubuythem.38_Low-carb(低a碳水化合物)dietsdon'tfrequentlyincludefruitbutstillallowforcertainvegetables.Sotokeepthecarbcountlow,youcantemporarilyremovefruitfromyourdiet.Afteryou'vereachedyourweightlosstarget,youshouldswitchtoadietthatcontainsfruitforoptimallong-termhealth.Beefisagreatchoice.39Acutofbeefsuchasatoproundsteakcontainsjustasomewhathigheramountofsaturated(fatthanaskinlesschickenbreastofthesamesize.Consumedairyproductsthathaslowfat.Proteinandcalciumfrommilk,cheese,andyogurthelpinstrengtheningbonesandalowerriskofheartdisease.Ifyou'retryingtokeepyourcalorieintakeincheck,choosereduced-fat,non-fat,orlow-fatdairyoptions.40Toputitanotherway,consumingproteinraisesyourmetabolic(rateby20-35percent,whiledigestingcarbohydratesorfatraisesyourmetabolicrateby5-15percent.It'swisetostartaddingproteintoyourdietnow.A.Low-carbdietsmakeyouhealthy.B.Prioritizevegetablesalongwithfruits.C.Proteinisaverycrucialcomponentofyourhealthydiet.D.Aflavorfulsteakisthesymboloftheprotein-packedmeal.E.Letusdiveintoaguidetoprovidingproteinforourbodies!F.You'llreceivealotoffiberaswellasavarietyofothernutrients.G.Addingmoreproteintoyourdietmayhelpyouburnmorecalories.神州智达英语·调研卷Ⅱ第7页（共0页）餐扫描全能王创建

到P和到Q的两段绳都是水平的,已知Q与P之间以及P与桌面之间的动摩擦因数都力1=0.4,物块P的重力为40N,物块Q的重力为20N.滑轮的质量,滑轮轴上的摩擦都不计。若用一水平向右的力F拉P使它做匀速运动,求:(1)物块Q所受的滑动摩擦力的大小和方向;(2)拉动物块P所需的力F的大小。

6.极光是宇宙中高速运动的带电粒子受地球磁场影响,与空气分子作用的发光现象。若带电的宇宙粒子射向北极,北极地区的地磁场方向沿x轴正方向(竖直向下),越靠近北极地面,磁场越强,因入射速度与地磁场方向不垂直,故宇宙粒子的运动轨迹呈

25.(15分)如图所示,长为R=7.2mR=7.2m的14光滑圆共同向右运动,质量为滑到轨道最低点时与物的瞬间将圆弧轨道撤走的最左端以向右的速度碰.已知物体A与传A数为2=0.2,重力加(1)物体A碰物体D(2)物体A与物体D时间.