{return} CD Agive back B turn back C.takr back D.come back哪词义近return

{return} CD Agive back B turn back C.takr back D.come back哪词义近return return return return return return return 正六边形ABCDEF 求向量BA+向量CD+向量EF 化简向量AC+向量DB+向量CD+向量BA ab.cd乘以9等于dc.ba abcd 个是多少 AB.CD×E=CD.BA,求A,B,C,D,E各是多少? when you write to him ,please()him选项：Agive my regard toBremember me to she made a candle ____us light Agive B gaveC to give D give 选哪个? I ( )some clothes to chairty because they were too smalls for me Agive away Bhangout 已知AD=BC,DC=BA 求证 AB∥CD已知AD=BC,DC=BA 要证明“AB=CD”证明出AB=DC,CD=AB,BA=CD,CD=BA,BA=DC,CD=AB,DC=AB,DC=BA等是否可行?证明角A=角B,证明出角B=角A可否 已知:如图EB平行CF,BA平分∠EBC,CD平分∠BCF,求证:AB平行CD d是三角形abc的边AB的中点,则向量CD等于 A.-BC+BA/2 B.-BC-BA/2 C.BC-BA/2 D.BC+BA/2我算完得A= =