地图上的方向是任意绘制的。[ ]
错误
已知f（x）=sinx+2x，x∈R，且f（1-a）+f（2a）＜0，则a的取值范围是______．
How pleased the emperor was _____ what the cheat said!
A．hearing
B．heard
C．hear
D．to hear
