A. It's about three hundred yuan.
B. Because it's good for me.
C. What do you do after dinner?
D. How often do you have English class?
E. When do you get up?
下列函数中,在(﹣∞,1)内是增函数的是( )
如图,⊙O是梯形ABCD的内切圆,AB∥DC,E、M、F、N分别是边AB、BC、CD、DA上的切点.