点P(5,-3)关于原点对称的点的坐标是[ ]
A.(-5,3)
B.(-5,-3)
C.(3,-5)
D.(-3,-5)
答案:A
---Will you please bring me the English dictionary, Lily?
---__________.
A. That’s right B. All right C. That’s all right
偏加料有什么危害?