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Bobbycamefromapoorfamily.HewantedtobuyhismotheraChristmaspresent,butheonlyhadadime(十分硬币).Hewalkedfromshoptoshopandfinallycametoaflowershop.BobbyaskedifhecouldbuyjustoneflowerforhismotherasaChristma
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1、已知f(cosx)=sin2x,则f(sin30°)的值为2、在△ABC中,角A、B、C所对的边分别a、b、c,a^2=b^2-c^2+√2ac,则B的大小是3、在△ABC中,角A、B、C所对的边分别为a、b、c,若A:B:C=1:2:3,则a:b:c等于4、在△ABC
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机械制图中一个基准面可以同时作为多个形位公差的基准么?同时需要它确定其他面的平行度等
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词语填空悄悄地什么
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按原文填空按原文填空海底的岩石上有()的珊瑚,有的像(),有的像()。()到处都是,()地蠕动着。大龙虾(),(
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Doyouliketravelling?Staying(56)___(health)whiletravellingcanhelptoensureyourtripisahappyandenjoyableone.(57)___youtravelabroad,herearethetipsyouneedtomakeyourtripmuch(58)___(easy):Makesureyo
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Steve,atwelve-year-oldboywithalcoholicparents,wasabouttobelostforever,bytheU.S.educationsystem.Remarkably,hecouldread,yet,inspiteofhisreadingskills,Stevewasfailing.Hehadbeenfailingsincefirstgrade,ashewa
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观测不同光照条件下生长的柑橘,结果见下表,请回答下列问题:光照强度叶色平均叶面积(cm2)气孔密度(个•mm-2)净光合速率(μmolCO2•m-2•s-1)强浅绿13.6(100%)826(100%)