题干
---Could we buy a piano, Jack?
---I’m afraid there ______ enough room for one in the house.
---I’m afraid there ______ enough room for one in the house.
A：aren’t
B：are
C：isn’t
D：i
答案(点此获取答案解析）
C
≥a恒成立，则实数a的取值范围是( )
