A:She
B:He
C:You
— Tom, who taught Chinese before you came to China?— Nobody. I learned it by .
良好的名誉取决于( )
郑州到长沙898千米,买3张票,500元够吗?
如图,抛物线y=ax2+bx+c(a≠0)的对称轴为直线x=2,且抛物线经过A(﹣1,0),C(0,﹣5)两点,与x轴交于点B.