高考注重能力的命题思想,使试题命制和试卷结构有了新的设计,下面例析有关集合的创新试题. 一、新定义型例1 设M,P是两个非空集合,定义M与P的差集为M-P={x|x∈M且x(?)P},则M- (M-P)等于( ) A.P B.M∩P C.M∪P D.M 分析这是集合新定义题,“M-P”是同学们在中学 The college entrance examination focuses on the propositional thinking of ability, so that the examination system and examination paper structure have a new design. The following example analyzes the innovative test questions about the collection. First, the new definition model 1 Let M, P be two non-empty sets, define M and The difference of P is MP={x|x∈M and x(?)P}, then M-(MP) is equal to () AP BM∩P CM∪P DM analysis This is a set new definition problem, “MP ”It is the students in the middle school