A:have sent
B:has sent
C:sent
D:sending
—Your daughter draws so well.Who taught her?
—_______. She learned it by herself.
反比例函数y=m-2x的图像在第二、四象限内,则m的取值范围( )
保持愉快心情是心理健康的核心,当遇到挫折而情绪不好时,不宜采取的调节方法是( )