——Hi, Jack. Is t this your new bike?
——No, _________is over there. It's a present from my uncle.
A:Mine
B:Yours
C:Hers
D:His
改革30年来,我国采取积极措施,让一切创造财富的源泉充分涌流。我们创造财富,应该( )
如图,直线l上有三个正方形a,b,c,若a,c的面积分别为5和11,则b的面积为…( )