已知$y=f\left(x\right)$是可导函数，“$f\text{'}\left(x_0\right)=0$”是“$x_0$为函数$f\left(x\right)$极值点”的(     )

我们每个人都希望自己成为一个与众不同的人，真正的个性应该是（   ）

阅读短文，掌握大意，然后从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

    A little sports shop is near my house. It sells (卖) many good things for  1 . At the shop, we can buy soccer balls,  2 , basketballs and so on. Today my  3 and I go to the4  to buy a tennis racket. There are a lot of 5 . And they have different  6   . I think every racket  7  very nice. My sister chooses (选择) a black one, because black is her favorite8  . You know, my sister is a big sports fan. She has a great sports    9   at home-five soccer balls, four basketballs and many tennis balls. She really likes   10  sports.