A:f(x)是偶函数
B:f(x)在R上是增函数
C:f(x)是周期函数
D:f(x)的值域为﹣1,+∞)
作文:
以“请原谅我一次”为题,写一篇不少于500字的作文。
要求:①除诗歌外,文体不限;②文中不得出现真实的地名、校名和人名;③书写要正确、规范、美观。
— Shall Brown come and play computer games?
— No, ________ he has finished his homework.
—They are my CDs.