方程x2=3x的根是( )
A:3
B:﹣3或0
C:3或0
D:0
已知函数y=2sinx+π2cosx-π2与直线y=12相交,若在y轴右侧的交点自左向右依次记为M1,M2,M3,…,M1M13→等于( )
I like places where the weather is always warm. I hope ____ Hawaii this winter.