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Is it on the desk?(改为复数句) on the desk?
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教案备课库《教案备课库（七年级上册）单元检测Unit 4 Wheres my schoolbag? 部分一》真题及答案
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为了比较+1与的大小可以构造如图所示的图形进行推算其中∠C=90°BC=3D在BC上且BD=AC=1．通过计算可得+1．填＞或＜=
如图所示电路电源电压保持不变R0为定值电阻闭合开关S当滑动变阻器的滑片P在某两点之间来回滑动时电流表的示数变化范围是0.5A～1.5A电压表的示数变化范围是3V～6V则电源电压为
MyfirstmemoriesofactsofkindnessarefromwhenIwasabout12yearsold.Ialways56peopleassoonaspossiblewithwhatevertheyneeded.AtthattimeInoticedthatmany57peoplehaddifficultygoingtotheshoppingmallafterheavysnow.Iwouldspendpartofa58Saturdayknottingonmyelderlyneighbor'sapartmentdoorstoaskifthey59anythingfromthemall.ThemallwasdownahugehillandIwouldbringbackaseveralbagsofnecessitiesforthemeverytimeIlikedthemanditmadethemso60too.Myfriendme61Iwasdoingandaftersometimesomeofthemjoinedinanditbecamea62astimewentby.I63askedformoneyforthesebutsometimestheoldladieswould64someinmypocketwithoutme.ThenexttimeIwouldbuysomeflowersorcardsforthemWhenIwenttocollegemanyofthesepeoplewouldaskmymotherabout me 65mymotherdidn'talwaysknowwhotheywere.Throughthose66betweenmymotherandthesepeopleshe67whatIusedtodoforthem—Ihadnevertoldher.IstartedhelpingotherswhenIwas12andithas68untiltoday.NowI'mateacherandteachingmystudentstheartoftrue69.Ioriginallywrotethisformyprofile个人简介butmymothersaidwhynotshareitwith70.Ihopethisencouragesyoungerpeople. 56.A.offered B.provided C.cared D.gave57.A.lazy B.tired C.poor D.old 58.A.free B.busy C.funny D.fine 59.Astole B.needed C.got D.took 60.A.pleased B.relaxed C.disappointed D.particular 61.A.whether B.when C.why D.what 62.A.rule B.habit C.hobby D.custom 63.A.never B.usually C.always D.sometimes 64.A.put B.use C.save D.keep 65.A.but B.as C.so D.or 66.A.conversations B.discussion C.argument D.speeches 67.A.heardfrom B.thoughtup C.learnedabout D.remindedof 68.A.troubled B.disappeared C.stopped D.continued 69.A.culture B.kindness C.surprise D.pressure 70.A.everyone B.everything C.nobody D.nothing
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为满足市场需求某超市在五月初五“端午节”来临前夕购进一种品牌粽子每盒进价是30元超市规定每盒售价不得少于40元根据以往销售经验发现当售价定为每盒40元时每天可卖出600盒每盒售价每提高1元每天要少卖出10盒． 1试求出每天的销售量y盒与每盒售价x元之间的函数关系式并写出自变量x的取值范围 2当每盒售价定为多少元时每天销售的利润P元最大最大利润是多少
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小薇同学在探究电流与电阻关系的实验中所用器材有学生电源电流表电压表标有20Ω2A的滑动变阻器开关导线和定值电阻R若干．1按照如图所示的电路图连接电路时小薇错把电流表和电压表的位置互换了如果闭合开关则表的指针可能有明显偏转．2她在实验时先将电源电压调为6V分别换上多个定值电阻进行探究数据记录如表所示老师指出其中一组数据拼凑的你认为是第组选填实验序号理由是实验所用的滑动变阻器的最大阻值太选填大或小了．3排除拼凑的数据后分析数据可以得到的结论是在电压一定时通过导体的电流与导体的电阻成．4在不更换滑动变阻器的情况下可以采取的措施选填字母符号完成这组拼凑数据所对应的实验测量．A．降低定值电阻两端电压 B．降低电源电压 C．选用更大阻值的定值电阻
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