----Look at this model ship. I made it all by ______ last week.
---- Wow, you are so smart!
A:me
B:my
C:mine
D:myself
把抛物线y=-x2向左平移1个单位,然后向上平移3个单位,则平移后抛物线的表达式为( )
89÷ ____= 89×14= ____
已知点P为曲线xy﹣52x﹣2y+3=0上任意一点,O为坐标原点,则|OP|的最小值为( )