题目

小猪佩奇(Peppa)一家今天去购物，下面是他们每个人买到的东西。 Mother(妈妈)Father(爸爸)PeppaGeorgeThings(东西)A cupA jacketA penA quiltColourredgreenblackblue 【1】Mother buys (买) a .A. pen B. cup C. quilt D. jacket【2】 buys a pen.A. Peppa B. George C. Mother D. Father【3】George's quilt is .A. red B. green C. black D. blue【4】Father'sis green.A. jacket B. quilt C. pen D. cup设A=xx-1，B=1-x-5x2-1，当x为何值时，A与B的值相等？