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1分Martinislostandhisparentsarereallyhim. A.interestedin B.afraidof C.busywith D.worriedabout
1分Thelittlegirll放outhertoysonthegroundandtookphotosforthem.
1分﹣﹣﹣It'sforustocarefortheanimalsindangerisn'tit? ﹣﹣﹣Yesandweshouldprotectthemverywell. A.safe B.necessary C.boring D.patient
将图中的三孔插座带保险盒正确的接入电路.
1分Beforeyoumaketheplanforthetravelingwhydon'tyoucallalltheplacestoiftheroomsareavailable? A.lookup B.lookfor C.findout D.lookat
如图所示电源电压恒定灯泡L1标有“3V1.5W“灯泡L2标有“6V6W“滑动变阻器R的最大阻值为10Ω.开关S1闭合S2断开滑动变阻器的滑片P置于b端时电流表的示数为0.5A.设灯泡的电阻不变 1闭合S1断开S2调节滑片P使L2正常发光此时滑动变阻器接入电路的阻值是多少 2闭合S1S2调节滑片P使L1正常发光此时L2的实际功率是多少 3闭合S1后如何控制S2和滑片P使电路消耗的总功率最小其最小值是多少
为测定某金属的比热容学校物理兴趣小组的同学把质量为200g的某金属块加热到98℃再投入到80g的12℃的水中混合后水和金属块的温度均为18℃.若不计热损失求 1水吸收的热量是多少 2某金属的比热容是多少 3该金属块放出的热量相当于完全燃烧多少酒精放出的热量q酒精=3.0×107J/kg
1分﹣Howisyourgrandma? ﹣She'sfine.SheusedtoTVathomeaftersupper.Butnowsheisusedto___outforawalk. A.watch;go B.watching;go C.watching;going D.watch;going
1分一I'veshownyoualltheinterestingandimportantplacesofourschool. 一Thankyouforsomuchtime. A.taking B.spending C.costing D.having
如图所示F是透镜的焦点.一束与凸透镜主光轴平行的光经凸透镜折射后射入盛水的杯中在杯底形成光斑请你完成此光斑形成的光路图.
1分NotonlyJimbutalsohisfathergreatinterestinChineseculture. A.have B.has C.are D.is
1分Pleasemakeas句子withthesewords.
5分IthebooktoyourmotherifIcan'tmeetyouthisafternoon. A.give B.willgive C.havegiven D.gave
1分﹣﹣﹣Ithinkstudentsshouldhavemobilephonestocalltheirparents. ﹣﹣﹣Theyoftenusethemtoplaygamesinstead. A.Goodidea. B.Noproblem. C.Idisagree.
小华学习了密度测量之后想自己动手测量酱油的密度于是他和同学用天平和最筒做了如图所示的实验. 1天平调节平衡后测出空烧杯的质量为18g在烧杯中倒入适量的酱油测出烧杯和酱油的总质量如图甲所示将烧杯中的酱油全部倒入量筒中酱油的体积如图乙所示则烧杯中酱油的密度为kg/m3. 2小华用这种方法测出的酱油密度与真实值相比选填“偏大”或“偏小”.为了减小这一误差只需要再加下面的操作再计算即可. A.测量倒完后烧杯的质量B.测量量筒和液体的总质量C.把液体倒回烧杯测烧杯和液体总质量
1分GermanyisEuropeancountryandKoreaisAsiancountry. A.anan B.aa C.aan D.ana
利用如图装置探究“物体的动能大小与哪些因素有关”将小球AB分别拉到与竖直方向成一定角度的位置然后由静止释放.当小球摆动到竖直位置时将与静止在水平面上的木块C发生碰撞木块都会在水平面上滑行一定距离后停止.图中的摆长L都相同θ1<θ2球AB的质量分别为mAmBmA<mB不计空气阻力. 1如图甲乙所示同时释放小球AB两小球到达竖直位置时的速度分别为vAvB则vAvB 选填“>”“=”或“<”. 2如图甲乙所示图乙中木块C滑行得更远由此可得出结论小球的动能大小与有关. 3如图乙丙所示图丙中木块C滑行得更远由此可得出结论小球的动能大小与有关
1分NomatterIcomebackhomemymotherisalwaysathomewaitingforme. A.what B.who C.when D.why
1分TonyBennylikesLinkinPark.TheybothwenttotheconcertheldinChongqinglastmonthandtooklotsofpictures. A.Eitheror B.Neithernor C.Notonlybutalso D.Bothand
5分﹣Davewouldyouliketocometomybirthdayparty?It'sMay6th. ﹣Thankyouverymuch.I'dloveto. A.in B.on C.at D.of
1分Shehasnomoneytotakethetaxibecauseherwalletwass偷afewminutesago.
5分Myauntisawriter.Shemorethantenbookssince1980. A.writes B.wrote C.haswritten D.willwrite
1分LookattheNoparkingsign.Youparkyourcarhere. A.should B.must C.needn't D.mustn't
1分﹣﹣﹣IthinkthelifeinGradeNineistotallydifferentfromthatinthefirsttwoyears. ﹣﹣﹣IagreewithyouItalotinthepastfewmonths. A.changed B.haschanged C.havebeenchanged D.ischanging
1分Mymomadvisesmetonsofexerciseshowevermyfathersugestsmoretoopenupmyeyes. A..todototravel B..doingtotravel C..doingtraveling D..todotraveling
1分It'sfunlanternriddlesduringtheLanternFestival. A.guess B.guesses C.guessing D.toguess
5分IworkhardthistermbutPeterworksmuchthanme. A.hard B.harder C.hardest D.thehardest
5分John'smotheralwaysaskshimhishomeworkatschool. A.finish B.tofinish C.finishing D.finished
5分﹣﹣Nooneknowsinahundredyears. ﹣﹣Butwecanimagineit. A.whatisourlifelike B.whatwillourlifebelike C.whatourlifewillbelike
1分Therearesomanykindsofmobilephoneshere.Wecan'tdecide. A.whattobuy B.tobuywhat C.whichtobuy D.tobuywhich
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