A:大都
B:涿郡
C:天京
D:余杭
The police didn't ____ the bad news ____ the old man.
已知正数x,y,z满足x2+y2+z2=6.
(Ⅰ)求x+2y+z的最大值;
(Ⅱ)若不等式|a+1|﹣2a≥x+2y+z对满足条件的x,y,z恒成立,求实数a的取值范围.