题干
---Stay a bit longer, please. It’s been such _______ fun having you here.
---Thank you, but I’ve got _______ early start tomorrow morning.
---Thank you, but I’ve got _______ early start tomorrow morning.
A：/; the
B：a; a
C：/; a
D：the; a
答案(点此获取答案解析）
C
在(0,1)内有极小值，则实数b的取值范围 