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已知A.=2x2+3xy-2x-1B.=-x2+xy-1求13A+6B2若3A+6B的值与x无关求y
已知A.＝5x2y－3xy2＋4xyB.＝7xy2－2xy＋x2y试解答下列问题1求A.－2B.的值
若x是方程4﹣4x﹣3=29﹣x的解y是方程62y﹣5+20=41﹣2y的解求2﹣3xy+x2﹣[2
已知A.=2x2+3xy﹣2x﹣1B.=﹣x2+xy﹣11求3A+6B2若3A+6B的值与x无关求y
若x＋22＋|y－1|＝0求4xy－2x2＋5xy－y2＋2x2＋3xy的值.
若x2－12y2＝xy且xy＞0则分式的值为______.
若|x+y﹣4|+xy﹣32=0求x2+3xy+y2的值
若x＋22＋|y－1|＝0求4xy－2x2＋5xy－y2＋2x2＋3xy的值.
若x的相反数是3|y|=5则xy的值为____________.
若x-y=5xy=6则x2y-xy2的值为
30
35
1
以上都不对
若|x+y+2|+xy﹣12=0则3x﹣xy+1﹣xy﹣3y﹣2的值为
3
﹣3
﹣5
11
若x＋y＝3且x＋2y＋2＝12.1求xy的值2求x2＋3xy＋y2的值.
若xn=5yn=3则xy2n的值为
45
225
75
15
若则xy的值为______.
若单项式3xym与﹣xy2是同类项则m的值是__________.
若|x＋2|＋y-3=0则xy的值为
-8
-6
5
6
若化简ax+3yx-y的结果中不含xy项则a的值为.
若x+y=10xy=1则x3y+xy3的值是.
若化简ax+3yx﹣y的结果中不含xy项则a的值为.
若实数xy满足则xy的值为
-5
5
-6
6
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A Nowsatellitesarehelpingtoforecasttheweather．Theyareinspaceandtheycanreachanypartoftheworld．Thesatellitestakepicturesoftheatmosphere大气becausethisiswheretheweatherform．Theysendthesepicturestotheweatherstations．Someteorologists气象学家canseetheweatherofanypartoftheworld．Fromthepicturesthescientistscanoftensayhowtheweatherwillchange． Todaynearlyfivehundredweatherstationsinsixtycountriesreceivesatellitepictures．Whentheyreceivenewpicturesthemeteorologistscomparethemwithearlierones．Perhapstheymayfindthatthecloudshavechangedduringthelastfewhours．Thismaymeanthattheweatheronthegroundmaysoonchangetoo．Intheirnextweatherforecastthemeteorologistscansaythis． Sotheweathersatellitesareagreathelptothemeteorologists．Beforesatelliteswereinventedthescientistscouldforecasttheweatherforabout240r48hours．Nowtheycanmakegoodforecastsforthreeorfivedays．Soonperhapstheymaybeabletoforecasttheweatherforaweekormoreahead． WhydoweusetheweathersatellitestotakepicturesoftheatmosphereBecause．
1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
试述终身教育的内涵及其理论
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． Accordingtothepassageyoursupervisorismostlikelyyour．
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．
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． Beforeyouarriveatworkyoushould．
C Harrywasaboyoffourteenyearsold．Hewastallandstron9．Andheranthefastestinhisclass．Soeveryonewasveryproudofhiminhisclass．Anewstudentcametohisclassamonthago．HisnamewasMike．Hewasthinandshort．Buthisclassmatesfoundthatheranveryfastwhiletheywereplayingfootball．TheywantedtoknowifMikecouldrunfasterthanHarry．Jackoneof Harry’SfriendstoldHarryaboutit．OfcourseHarrydidn’tbelieveit． WhynothavearacewithhimsaidJack．That’sagoodideal’saidHarry．Gototelltheunluckyboy．I’llhavearacewithhimtomorrowmorning． EarlythenextmorningHarrygotreadyfortherace．Hewassurethathecouldbefirst．Jackdidn’twakeupontimeandcouldn’tgowithhim．ThateveningJackwenttoseeHarry．Theybegantotalkabouttherace．Harry’Sgrandmaheardtheminthenextroom．ShecameinandaskedWhat’StheresultHarry Iwasthesecond．Grandma．answeredHarry． Congratulationstoyou!theoldwomansaidhappily．AndhowwasMike Hewasthelastbutone． Harrydidn’tbelieveJackbecause．
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．
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．
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．
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．
Whatitis!
1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
请设计一个教案达到以下目的 1．能听说读写掌握句子HowdoyougotoschoolUsuallyIgotoschoolonfoot． Some．timesIgobybike．并能在情景中正确运用 2．能够表述自己以何种方式上学并简单陈述原因 3．培养学生运用英语的能力
schoolismuchlargerthan．
Thefamilyatthelunchtablewhensomeonecametotellthemwhathadhappenedat.
A Nowsatellitesarehelpingtoforecasttheweather．Theyareinspaceandtheycanreachanypartoftheworld．Thesatellitestakepicturesoftheatmosphere大气becausethisiswheretheweatherform．Theysendthesepicturestotheweatherstations．Someteorologists气象学家canseetheweatherofanypartoftheworld．Fromthepicturesthescientistscanoftensayhowtheweatherwillchange． Todaynearlyfivehundredweatherstationsinsixtycountriesreceivesatellitepictures．Whentheyreceivenewpicturesthemeteorologistscomparethemwithearlierones．Perhapstheymayfindthatthecloudshavechangedduringthelastfewhours．Thismaymeanthattheweatheronthegroundmaysoonchangetoo．Intheirnextweatherforecastthemeteorologistscansaythis． Sotheweathersatellitesareagreathelptothemeteorologists．Beforesatelliteswereinventedthescientistscouldforecasttheweatherforabout240r48hours．Nowtheycanmakegoodforecastsforthreeorfivedays．Soonperhapstheymaybeabletoforecasttheweatherforaweekormoreahead． Maybewe’llsoonbeabletoforecasttheweatherfor．
D Twofarmerswereontheirwayhomeoneeveningafterahardday’swork．Bothweretired．TheyhappenedtolookupattheskyandSaWablackcloudoverhead． Ah!saidonefarmertomorrowweshallhaverainandthericewillgrowwell．ThesecondansweredNonsensetherainwillonlykillthecrops． Sotheybegantoquarrel．Justthenathirdfarmerclimealongandaskedthemwhytheywerequarrelin9．Bothfarmersexplainedabouttheblackcloud． Whatcloudaskedthethirdfarmer．Theyalllookedatthesky．Thecloudwasnolongerthere． Whenthereareblackblockcloudsinthesky．
1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
thebadweathertheswimmingmatchhadbeenputoff．
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．
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．
Thegreenkitecanflythanthatredone．
D Twofarmerswereontheirwayhomeoneeveningafterahardday’swork．Bothweretired．TheyhappenedtolookupattheskyandSaWablackcloudoverhead． Ah!saidonefarmertomorrowweshallhaverainandthericewillgrowwell．ThesecondansweredNonsensetherainwillonlykillthecrops． Sotheybegantoquarrel．Justthenathirdfarmerclimealongandaskedthemwhytheywerequarrelin9．Bothfarmersexplainedabouttheblackcloud． Whatcloudaskedthethirdfarmer．Theyalllookedatthesky．Thecloudwasnolongerthere． Thethirdfarmereltmewithandsaidtotheothertwo．He．
1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
1wasonlyaboutsixthatheheldhishand46． outtome．Itookitinmeandwewalked．Then47． IaskhimGrandpahowcomeyouhave48． SOmuchlinesonyourhand’’Helaughedand49． saidWellthat’Sabigquestion!Hewas50． silentforamoment．Soheansweredslowly51． Eachtheselinesstandsforatroubleinmy52． life．Ilookedathisotherhands．ButGrandpa53． whatdoyouhavemorelinesonthatone54． Becausetherearemorethehonorsandjoys55． inmylife．
numberofstudentshavegonetoShanghai．
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． Whatisthebesttitleforthispassage
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．
Doyouwanttobuypork
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