A: Let’s paint !()
B: ____________________.
A:Great.
B:Let's paint.
C:Sure, here you are.
龟兔赛跑,起初兔子跑的快,这是用____来比较快慢的,后来龟、兔均到达终点,但是乌龟获得胜利,这是用____来比较快慢的。
It is important ______ students ______ carefully in class .
若函数f(x)的图象与函数gx=13x的图象关于直线y=x对称,求f(2x﹣x2)的单调递减区间.