题干
When the new president ______ after the election, he _______ a series of new policies.
A：came into power; came up
B：came to power; came up with
C：came in power; came up
D：was in one's power; came up with
答案(点此获取答案解析）
B
对任意实数
恒成立，则实数
的取值范围为