—No, you _________.
A:mustn't
B:needn't
C:shouldn't
图中,按①、②、③的数字顺序,下列说法正确的是( )
已知抛物线与x轴交于点(﹣1,0),(2,0),且过点(1,3),求这条抛物线的解析式.
Mary often buys____ ____ ____ ____.
当北印度洋的季风洋流呈顺时针流动时 ( )