[今日更新]2023~2024学年核心突破XGKG DONG (二十七)27XGKG DONG试题.物理试卷答案

[今日更新]2023~2024学年核心突破XGKG DONG (二十七)27XGKG DONG试题.物理试卷答案试卷答案,我们目前收集并整理关于[今日更新]2023~2024学年核心突破XGKG DONG (二十七)27XGKG DONG试题.物理试卷答案得系列试题及其答案，更多试题答案请关注微信公众号：考不凡/直接访问www.kaobufan.com(考不凡)

[今日更新]2023~2024学年核心突破XGKG DONG (二十七)27XGKG DONG试题.物理试卷答案试卷答案

以下是该试卷的部分内容或者是答案亦或者啥也没有，更多试题答案请关注微信公众号：考不凡/直接访问www.kaobufan.com(考不凡)

24.WhydoestheauthormentionEdison'swordsinthefirstaragraph?A.TocompareEdisonandNkosi.B.Tointroducethetopicofthetext.C.Tostresstheimportanceofinventions.D.Toshowtheadvantagesofmodernlifestyle25.WhatcanweknowaboutthecountryMalawi?A.Itisinneedofelectricitybadly.B.Manypeopleareaddictedtogames.C.11%ofitspopulationhasaccesstoeducation.D.Manystudentscan'tpasstheexamsduetotheirlaziness.26.WhydidNkosiinventtheturbine?A.Tomakeaprofit.B.Toshowoffhisknowledge.C.Tobringelectricitytohisvillage.D.TowintheawardfromtheQueenofEngland.27.WhichofthefollowingcanbestdescribeNkosi?A.Braveandproud.B.Strongandpatient.C.Confidentandcalm.D.Creativeandgenerous.CIt'snosecretthatwalkingisgoodforyou.Manyofusaretryingtogetinthoserecommended10,000stepsadaythatourwearablefitnesstechnologyurgesustoachieve.Buthowcanwegetthemostoutofthosesteps?Youburnmorecaloriesinashorteramountoftimewithhigher-intensity()exercisethatpushesyouintoahigherheartrate.Walking,however,isamoderate-intensityformofexercise.Togetthemostcalorie-burningbenefits,then,itwouldseemthatwalkingataconsistentlyquickpacethatkeepsyourheartpumpingwouldmakethemostsense.TheAmericanCollegeofSportsMedicine(ACSM)putsyourtargetheartrateformoderate-intensityphysicalactivityat64%to76%ofyourmaximumheartrate.AccordingtotheCentersforDiseaseControlandPrevention,toestimateyourmaximumage-relatedheartrate,subtract()youragefrom220.Forexample,ifyou're28yearsold,yourestimatedmaximumheartrateiscalculatedas220-28-192beatsperminute.Keepingwithourexampleofa28-year-oldperson,amoderate-intensityheartratewouldbebetween123and146beatsperminute.Duringthistypeofexercise,youwillfeelyourbreathingrateincreasebutshouldstillbeabletospeakincompletesentences.Thereisalsoresearchshowingthatchangingyourpacetovaryyourintensity,and,consequently,yourheartrate,throughoutyourwalkcanincreaseyourmetabolic(新陈代谢rateby6%to20%morethanremainingatasteadypacethroughoutthedurationofyourwalk.Basedonthisresearch,youshouldbreakupyourpacetoalsoincludeshortperiodsoflightintensity.Youachievelight-intensityexerciseataheartrateof57%to63%ofyourmaximumheartrate,accordingtoACSM.Fora28-year-old,thatwouldbeequaltoabout109to121beatsperminute,whichshouldfeellikeaverycomfortablepace,whereyoucaneasilycarryonfullconversations.Walkingisabeneficialformofexercise.Whetheryourgoalisfatloss,increasedfitnessorsimplykeepingyouroverallhealth,walkingoffersallthesebenefits.28.Howdoestheauthormainlyorganizeparagraph3?A.Bylistingfigures.B.Byfollowingthespaceorder.C.Byfollowingthetimeorder.D.Bymakingacomparison.【2023年分科诊断测试卷（一）·英语第4页（共8页）】

7.我国科幻电影《流浪地球2》中的“太空电梯”为从地面基座到空间站的直立式电梯,在途中空间站位于地球静止卫星轨道上。当太空电梯的轿厢发生故障而停在途中某位置时,下列说法正确的是DA.轿厢的加速度大于空间站的加速度B.地球对轿厢的万有引力提供轿厢需要的向心力C.航天员在轿厢中所受的向心力小于在地面上所受的向心力D.轿厢停的位置离地面越高,航天员对轿厢的弹力越小

4.如图所示,光滑水平面上放置质量分别为m和2m的四个木块A、B、C、D,其中A、C两木块间用一不可伸长的轻绳相连,木块间的最大静摩擦力是g。现用水平拉力F拉D木块,使四个木块以同一加速度运动,则A、C间轻绳的最大拉力为()A.3mg5B.3mg2C.3mg4D.3gnmnmAC2mB2mDF

(4)完成上述实验后小明进一步思考,在没有电流表的情况下能否测量小灯泡的额定功率?他将将一个阻值为R0的定值电阻接在原电路电流表的位置,设计的电路图如图丙所示,然后调节滑动变阻器滑片使电压表示数为U,接着保持滑片位置不变,将电压表B点(选填“A点”或“B点”)的接线改接到C点,观察并记录电压表示数为U,则小灯泡的额定功率可表示为P=10-6用R0、U、U表示)。