一 Her job is to look after the baby.
一 You mean she's a baby-sitter?
A:take care of
B:wake up
C:make fun of
中国革命的新道路新在( )
(Ⅰ)求数列{an}的通项公式;
(Ⅱ)设bn=an•log2an,其前n项和为Sn,若(n﹣1)2≤m(Sn﹣n﹣1)对于n≥2恒成立,求实数m的取值范围.