It's raining outside. You'd better not go out.
A:heavily
B:hardly
C:nearly
定义在R上的函数fx满足f4=1,f'x为fx的导函数,已知y=f'x的图像如图所示,若两个正数a、b满足f2a+b<1,则b+1a+1的取值范围是 ( )
下列有关文学常识的表述,不正确的一项是( )