题干
Tim would like to know . As for it, you'd better not tell him.
A：new something
B：something new
C：anything new
D：nothing new
答案(点此获取答案解析）
B
Tim would like to know . As for it, you'd better not tell him.
A：new something
B：something new
C：anything new
D：nothing new
＜0对一切
恒成立，则实数a的取值范围是