我国四大高原中,地势最高的是( )
A:内蒙古高原
B:黄土高原
C:云贵高原
D:青藏高原
The thief who was caught stealing on the bus couldn't ______ the fact that the passenger's purse was found in his pocket.
已知函数fx=ax3+bx2+cx+d在O,A点处取到极值,其中O是坐标原点,A在曲线y=x2sinx+xcosx,x∈π3,2π3上,则曲线y=fx的切线的斜率的最大值是( )
《西江月》描写山乡夜晚骤雨将至的诗句是:____,____。
化简下列各比.
240:48
59 : 16
0.875: 1516 .