平面直角坐标系中,与点(2,﹣3)关于原点中心对称的点是[ ]
A.(﹣3,2)
B.(3,﹣2)
C.(﹣2,3)
D.(2,3)
答案:C
The detective found him guilty ________ robbing the old man of his watch.
A.in
B.of
C.with
D.on
哪种鱼干制后不称为鲞()。
A.银鱼
B.黄鱼
C.鳗鱼
D.墨鱼