Could you ask her ____ (call) me back this evening?
若集合A={x|x﹣1<5},B={x|﹣4x+8<0},则A∩B=( )
已知四边形ABCD是平行四边形,下列结论中不正确的有( )①当AB=BC时,它是菱形 ②当AC⊥BD时,它是菱形③当∠ABC=90o时,它是矩形 ④当AC=BD时,它是正方形