根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Today is Sunday. The clothes at Mr. Wang's Clothes Store 1 on sale. So I want to buy some clothes 2 my grandparents, parents and myself. Let 3 have a look. This yellow sweater is at a very good 4 — only 16 dollars. And it is OK for my 5. For my grandmother I want to buy those black 6. They are comfortable (舒适的). 7 about this white T-shirt? Oh, my father can wear (穿) it to 8 basketball. And there are many socks in all kinds of colors. I know my mother 9 green very much. So I will buy these green ones. For me I 10 a pair of blue shorts.

歌曲《长江之歌》的歌词“你用健美的臂膀挽起高山大海”中的“高山”和“大海”分别指