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下图中，以直线为轴旋转一周，可以形成圆柱的是（）。
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下图中以直线为轴旋转一周可以形成圆柱的是
下图中以直线为轴旋转一周可以形成圆柱的是
正方形ABCD的边长是2cm以直线AB为轴旋转一周所得到的圆柱的侧面积为cm2.
将两边长分别为4cm和6cm的矩形以其边所在的直线为轴旋转一周所得圆柱体的面积为cm2
圆锥可以看成是直角三角形以它的一条直角边所在的直线为轴其余各边旋转一周而成的面所围成的几何体那么圆
下图中以直线为轴旋转一周可以形成圆柱的是
如图中以直线为轴轴旋转一周可以形成圆柱的是
长方形一边为轴旋转一周形成的图形是一个圆柱．．
以边长为2的正方形的一边所在直线为旋转轴将该正方形旋转一周所得圆柱的体积为.
以长方形或正方形的一条边所在的直线为轴让长方形或正方形旋转一周一定可以得到一个圆柱．判断题
以长方形的一条边所在的直线为轴把长方形旋转一周可以得到一个
长方体
圆柱
正方体
圆锥
以直角三角形任意一条直角边为轴旋转一周可以形成一个圆柱．判断对错
若将边长为的正方形绕其一条边所在直线旋转一周则所形成圆柱的体积等于.
如图正方形ABCD边长为2以直线AB为轴将正方形旋转一周所得圆柱从正面看所得图形的周长是______
正方形ABCD的边长是2cm以直线AB为轴旋转一周所得到的圆柱的侧面积为
以____的一边所在直线为旋转轴其余三边旋转形成的面所围成的______叫做圆柱 旋转轴叫做圆柱的
如下图所示的平面中阴影部分绕中间轴旋转一周形成的几何体形状为
一个球体
一个球体中间挖出一个圆柱
一个圆柱
一个球体中间挖去一个长方体
一个直角三角尺的两条直角边长是6和8它的斜边长是10将这个三角尺绕着它的一边所在的直线旋转一周温馨提
一个直角三角尺的两条直角边长是6和8它的斜边长是10将这个三角尺绕着它的一边所在的直线旋转一周温馨提
直线绕x轴旋转一周所得旋转曲面的方程______．
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1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
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——WhatdoyouthinkofthereportontheUFO —Great!Manystudentswereinterestedinitandtheykeptonstandingtheendofthemeeting．
SomeyearsagoChinesehighschoolstudentswouldshowtheirnewschoolbagsnewclothesornewpenstotheirclassmateswhenthenewtermstarted．Todayhoweverallhavel6Ifyoustillcomebacktoschooll70nlythesethingsyouareout—of-date过时的Studentsinbigcitiesliketobringthelatesthigh．techthingstoschoolandfeelhappyand18toshowoff炫耀thesethingsto19．MobilephonesMP3playersCDplayerselectronicdictionariesthelistisendless． Youngpeoplethinkthat．1ivinginthe21stcenturytheymustkeepupwiththe20Theydon’twanttofall21．Besidestheythink22theyneedtokeepintouchwiththeirclassmates．SOtheyneedmobilephones．Theyalsoliketo23thepopmusicSOtheyneedCDplayers．Theyexplainthat24likeelectronicdictionarjesthesecanbe25intheirstudy26．Theythinkthattheirparentsshouldunderstand27theywantthesethings- Foreignstudentswillalsobringsomelatesthigh-techthingswhenthey28toschoolatthebeginningofanewterm．29theyoftenusethemoneywhichtheymadebythemselvesduring theholidayto30thesehigh—techthingsthattheywant．
假定你是李华希望通过外籍教师Peter找一位英语笔友请写一封短信描述一下你理想中笔友的条件 并说明为什么选这样的笔友具体条件包括l．年龄2．性别3．爱好旅游运动宠物等 注意1．词数在100词左右2．可以适当增加细节以使行文连贯3．开头语已为你写好 DearPeter Iamwritingtoaskwhetheryouareabletodomeafavor．
A Nowsatellitesarehelpingtoforecasttheweather．Theyareinspaceandtheycanreachanypartoftheworld．Thesatellitestakepicturesoftheatmosphere大气becausethisiswheretheweatherform．Theysendthesepicturestotheweatherstations．Someteorologists气象学家canseetheweatherofanypartoftheworld．Fromthepicturesthescientistscanoftensayhowtheweatherwillchange． Todaynearlyfivehundredweatherstationsinsixtycountriesreceivesatellitepictures．Whentheyreceivenewpicturesthemeteorologistscomparethemwithearlierones．Perhapstheymayfindthatthecloudshavechangedduringthelastfewhours．Thismaymeanthattheweatheronthegroundmaysoonchangetoo．Intheirnextweatherforecastthemeteorologistscansaythis． Sotheweathersatellitesareagreathelptothemeteorologists．Beforesatelliteswereinventedthescientistscouldforecasttheweatherforabout240r48hours．Nowtheycanmakegoodforecastsforthreeorfivedays．Soonperhapstheymaybeabletoforecasttheweatherforaweekormoreahead． Meteorologistsforecasttheweather．
1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
NaturallyafterItoldherwhattod0mydaughtergoanddotheoppsite!
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SomeyearsagoChinesehighschoolstudentswouldshowtheirnewschoolbagsnewclothesornewpenstotheirclassmateswhenthenewtermstarted．Todayhoweverallhavel6Ifyoustillcomebacktoschooll70nlythesethingsyouareout—of-date过时的Studentsinbigcitiesliketobringthelatesthigh．techthingstoschoolandfeelhappyand18toshowoff炫耀thesethingsto19．MobilephonesMP3playersCDplayerselectronicdictionariesthelistisendless． Youngpeoplethinkthat．1ivinginthe21stcenturytheymustkeepupwiththe20Theydon’twanttofall21．Besidestheythink22theyneedtokeepintouchwiththeirclassmates．SOtheyneedmobilephones．Theyalsoliketo23thepopmusicSOtheyneedCDplayers．Theyexplainthat24likeelectronicdictionarjesthesecanbe25intheirstudy26．Theythinkthattheirparentsshouldunderstand27theywantthesethings- Foreignstudentswillalsobringsomelatesthigh-techthingswhenthey28toschoolatthebeginningofanewterm．29theyoftenusethemoneywhichtheymadebythemselvesduring theholidayto30thesehigh—techthingsthattheywant．
youturnonHomeWithKids家有儿女you’11neverbeabletoturntheTVoff．
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Hehadsomethingtowritedownandaskedmefor．
请简述新课程目标的教学活动设计要求
——theyanEnglishclass ——N0．theyaren’t．
B Noonewantstolooksillyordothewrongthingatanewjob．Itisimportanttomakethefightimpression印象fromtheveryfirstday．Youwillfacenewpeople．Youwillbeinanewplace． Itmaybedifficulttoknowwhattod0．Herearefivetipstohelpyoumakeitthroughthefirstdayatanewjob 1．Firstimpressionscanlastforever．Makesureyoumakeagoodone．Beforeyourfirstdayfindoutifyournewjobhasadresscoderulesaboutwhatyoucanwealtowork．IfS0besuretofollowit．Nomatterwhatalwaysbeneatandclean． 2．Gettoworkontime．Giveyourseffanextral5minutestomakesureyouarriveontime． 3．Payattentiontointroductions．Oneofthefirstthingsthatyoursupervisormaydoistointro-duceyoutoco-workers．TheseCO-workerswillbeimportanttoyou．Theyaletheoneswhowillansweryourquestionswhenthebossisnotaround． 4．Askplentyofquestions．Makesurethatyoursupervisorhastoldyouwhatisexpectedofyou．Ifheorshehasnottoldyouyourdutiesaskforalist．Setdailyandweeklygoalsforyourself． 5．Neverbethefirstonetoleave．ObservewhatyourC0—workersdoaroundquittingtime下班时间．Itdoesnotlookgoodforyoutobeeagertoleave． AccordingtothepassagewhichofthefollowingstatementsisTRUE
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Thedaysareshort——itisnowDecember．
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1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
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