下列各组角中,∠1与∠2是对顶角的为( )
A:
B:
C:
D:
一元二次方程3x2-x=0的解是 ( )
–There is little ________ at home. Let's go and buy some apples, pears and strawberries.–OK, we'll go to the supermarket in a minute.
下图直接反映的是美国政治生活( )