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下列图形中，∠2＞∠1的是（ ）
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下列图形中是中心对称图形的有
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下列图形中轴对称图形的个数是
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下列图形中既是轴对称图形又是中心对称图形的有
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观察下列一组图形其中图形1中共有2颗星图形2中共有6颗星图形3中共有11颗星图形4中共有17颗星按此
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如图下列图形都是由面积为1的正方形按一定的规律组成其中第1个图形中面积为1的正方形有2个第2个图形中
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下列图形中的五边形ABCDE都是正五边形则这些图形中的轴对称图形有
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如图下列图形都是由面积为1的正方形按一定的规律组成其中第1个图形中面积为1的正方形有2个第2个图形中
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下列图形中是轴对称图形的个数是
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如图下列图形都是由面积为1的正方形按一定的规律组成其中第1个图形中面积为1的正方形有2个第2个图形中
如图下列图形都是由面积为1的正方形按一定的规律组成其中第1个图形中的正方形有2个第2个图形中面积为1
下列图形中是轴对称图形的有
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下列图形中是中心对称图形的有
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如图所示下列图形都是由面积为1的正方形按一定的规律组成其中第1个图形中面积为1的正方形有2个第2个图
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如图下列图形都是由面积为1的正方形按一定的规律组成其中第1个图形中面积为1的正方形有2个第2个图形中
下列图形中既是轴对称图形又是中心对称图形的共有
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观察下列一组图形其中图形1中共有2颗星图形2中共有6颗星图形3中共有11颗星图形4中共有17颗星按此
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下列图形中是中心对称图形的有个.
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下列数字图形中既是轴对称图形又是中心对称图形的有
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下列图案中既是中心对称图形也是轴对称图形的个数为
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下列图形中是轴对称图形的有
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目前有部分学生在做作业或考试时喜欢使用修正液涂改液经实验证明修正液中含有多种挥发性有害物质吸入后易引起头晕头痛严重者会呼吸困难抽搐．三氯乙烷CH3CCl3就是其中的一种．下面关于三氯乙烷的几种叙述正确的是
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Neversaygoodbye WhenIwastenIwassuddenlyconfrontedwiththeseverepainofmovingfromtheonlyhomeIhadeverknown.Mywholelifebriefasitwashadbeenspentinthatbigoldhousedeeplyandthankfullytouchedbythelaughterandtearsoffourgenerations. WhenthefinaldaycameIrantotheheavenofthesmallbackporch走廊andsatalonetremblingastearswelledupfrommyheart.SuddenlyIfeltahandrestonmyshoulder.Ilookeduptoseemygrandfather.Itisn'teasyisitBilly?hesaidsoftlysittingdownonthestepsbesideme. GrandpaIrepliedthroughmytearsHowcanIeversaygoodbyetoyouandallmyfriends? Foramomenthejuststartedoffintotheappletrees.Goodbyeissuchasadwordhesaid.Itseemstoofinaltoocoldforfriendstouse.Weseemtohavesomanywaysofsayinggoodbyeandtheyallhaveonethingincommonsadness. Icontinuedtolookintohisface.Hegentlytookmyhandinhis.Comewithmemyfriendhewhispered. Wewalkedhandinhandtohisfavoriteplaceinthefrontyardwhereahugeredrosebushsatattractivelyalone. WhatdoyouseehereBilly?heasked. IlookedattheflowernotknowingwhattosayandthenansweredIseesomethingsoftandbeautifulGrandpa. Kneelinghepulledmeclose.Itisn'tjusttherosesthatarebeautifulBilly.It'sthatspecialplaceinyourheartthatmakesthemso. Hiseyesmetmineagain.BillyIplantedtheserosesalonglongtimeago﹣beforeyourmotherwasevenadream.Iputthemintothesoilthedaywhenmyfirstsonwasborn.Itwasmywayofsayingthank﹣youtoGod.Thatboy'snamewasBillyjustlikeyours.Iusedtowatchhimpickrosesforhismother. Isawmygrandfather'stears.Ihadneverseenhimcrybefore.Hisvoicebecamehoarse. Onedayaterriblewarcameandmysonlikesomanysonswentawaytofightagreatevil.HeandIwalkedtothetrainstationtogether﹣﹣﹣Threemonthslateratelegramcame.MysonhaddiedinsometinyvillageinItaly.AllIcouldthinkofwasthatthelastthingIsaidtohiminthislifewasgoodbye. Grandpaslowlystoodup.Don'teversaygoodbyeBilly.Don'tevergiveintothesadnessandtheloneliness.Iwantyoutorememberthejoyandthehappinessofthosetimeswhenyoufirstsaidhellotoafriend.Takethatspecialhelloandlockitawaywithinyou﹣inthatplaceinyourheartwheresummerisaregulartime.WhenyouandyourfriendsmustbepartedIwantyoutoreachdeepwithinyouandbringbackthatfirsthello. Ayearandhalflatermygrandfatherbecamegravelyill.Whenhereturnedfromseveralweeksinthehospitalhewantedhisbednexttothewindowwherehecouldseehisbelovedrosebush. ThefamilywassummonedandIreturnedtotheoldhouse.Itwasdecidedthattheoldestgrandchildrenwouldbeallowedtosaytheirgoodbyes.WhenitcametomyturnInotedhowtiredhelooked.Hiseyeswereclosedandbreathingwasslowandhard. Itookhishandasgentlyashehadoncetakenmine. HelloGrandpaIwhispered.Hiseyesslowlyopened. Hellomyfriendhesaidwithabriefsmile.HiseyesclosedagainandImovedon. Iwasstandingbyhisrosebushwhenanunclecametotellmethatmygrandfatherhaddied. RememberingGrandpa'swordsIreacheddeepwithinmeforthosespecialfeelingsthathadmadeupfriendship.SuddenlyandtrulyIknewwhathadmeantaboutneversayinggoodbye﹣refusetogiveintosadness. 1Theauthor'spurposeofwritingthispassageisto. A.conveyhissadnessandsorrowformovinghouse B.describethelaughterandtearsofthegenerationslivingtogether C.explaintherealmeaningofneversaygoodbye D.cherishthememoryofhisuncleandhisgrandfather 2Fromthelastparagraphwecaninferthat A.theauthor'sgrandfatherdied B.theauthordidn'tfeelsadabouthisgrandfather'sdeath C.theauthorhadadeepfriendshipwithhisgrandfatherratherthanlove D.theauthor'sgrandfatherlivesinhisheartforever 3ThefollowingstatementsbasedonthepassageareallrightEXCEPT A.theauthor'sunclehadbeeninthewarforlessthanhalfayear B.theauthorreturnedtotheoldhouseinordertolookafterhisgrandfather C.theauthor'sgrandfatherplantedtheroseswhentheauthor'sgrandmotherhadachild. D.theauthor'soldhousewasfilledwithlaughterandtears 4Whydidtheauthor'sgrandfathercrywhenwalkingwithhimintheyard? A.Hewassatisfiedwiththewholehappyfamily. B.Hewascontentwiththebloomingredroses. C.Therosesremindedhimofhisfirstsonwhodiedinthewar. D.Therosesbroughthimbacktothemomentwhensayinggoodbyetohisfirstson. 5Theunderlinedwordgravelyisclosestinmeaningto. A.gently B.seriously C.gracefully D.uncomfortably 6Whichofthefollowingcanbestdescribetheauthor'sgrandfatheraccordingtothepassage? A.Kindandstrong﹣willed B.Cautiousandenthusiastic C.Considerateandscholarly D.Humorousandsincere
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手电筒是生活里一种手持式电子照明工具．请根据图示回答下列问题 1上述含有的金属元素有填元素符号属于有机合成材料的是填一种即可 2该塑料是选填“热塑性”或“热固性”塑料制品大量使用会引发的环境问题是． 3生活生产中使用合金十分广泛其原因可能是填一种即可．
ItisanewkindofrobotinventedbyChinesethatcanfeelpainwhenbeingusedinadentaltrainingcourse. A.one B.it C.that D.theone
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Istillremembermymiddleschoollifeinthatsmalltown.IamtheninaschoolforstudentsfromTibet.Aswealllefthomeataearlyagewemetlotsofproblemsinourdailylife.Wehadtodothewashingcleaningandshoppingbyus.Howeverweseldomfeltlonelyorhelplessly.Weenjoyedourhappylife.Atweekendswewouldplaybasketballswaminthepoolorgoforapicnic.Wearelivedinabigfamily.Wetreatedeachotherbrothersandsisters.Ifanyoneofushadanydifficultywithhisstudiestheotherstudentwouldhelphimout.Ithasbeenfiveyearswhenwegraduatedbutthosememoriesareassweetasneverbefore.
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Mygrandmotherwasalwaysencouragingmetosetgoalsandworkhardtoachievethem.Shewouldtellmenottobeafollowerandnottoset1onwhatIcouldachieve.She2believedthattherewerenolimitsthatyoucould3whateveryouwanted.Iwouldneverforgetthefollowingstorythatsheoncetoldme.Afarmerwonfirst4atthecountryfairforhishugeradish小萝卜thatwastheexactshapeand5ofamilkbottle.Manywere6astohowthefarmerwasabletogrowthisradishthatwastheexactshapeofamilkbottle.7onegentlemanwentuptothefarmerandaskedthequestion.Thefarmerreplied'Itwas8.IgottheseedgrowingandthenIputitintothemilkbottle.Ithad9elsetogo.'Youcanusethisstoryasananalogy比喻tolife﹣ourlivesare10bythekindofsurroundingsweplaceourselvesinthepeoplethatweallowto11usandthegoalswegiveourselves.Ifweonly12andtakenoactionthenwegetnofurther.Butifwe13setagoalandtakeactionthenourlifetakesa14shape.Goalsandactionscanhelpusaccomplishmoreinayearthanwhatsomepeoplewillaccomplishinalifetime.Toprovethis15readthebiographiesof16peopleandyouwillseethatgoalsandactions17playedabigroleintheirsuccess.Rememberthe18ofMaryKayAshwhosaid'Don'tlimityourself.Manypeoplelimitthemselvestowhattheythinktheycando.Youcango19yourmindletsyou.Whatyoubelieverememberyoucanachieve.'Insummarydon'tputyourselfinabottleinotherwordsmoveoutofwhatis20andsecureifyouwanttomoveforward.1A.expectations B.rules C.limits D.lines2A.truly B.naturally C.tightly D.partly3A.win B.grasp C.realize D.achieve4A.price B.prize C.position D.award5A.size B.length C.weight D.height6A.doubtful B.worried C.anxious D.curious7A.Immediately B.Gradually C.Finally D.Actually8A.strange B.easy C.funny D.secret9A.nowhere B.everywhere C.somewhere D.anywhere10A.shaped B.formed C.controlled D.improved11A.understand B.help C.influence D.contact12A.dream B.refuse C.doubt D.change13A.struggle B.refuse C.continue D.plan14A.beautiful B.different C.solid D.clear15A.truth B.lesson C.point D.evidence16A.successful B.brave C.friendly D.careful17A.asusual B.aboveall C.atall D.infact18A.case B.wisdom C.thought D.speech19A.asif B.incase C.asfaras D.aslongas20A.comfortable B.valuable C.ordinary D.boring
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