A:I want to go to school.
B:I want to go on a trip.
若实数a,b满足ab>0,且a2b=4,若a+b≥m恒成立.
(Ⅰ)求m的最大值;
(Ⅱ)若2|x﹣1|+|x|≤a+b对任意的a,b恒成立,求实数x的取值范围.
读课文《陈太丘与友期》,下列说法正确的一项是( )