My family came to America from China many years ago. I was born in Oakland in 1989. Many young Chinese Americans don't learn much1because our parents2us to learn English very well.

    Chinese is a difficult language. If we don't speak it3, it's easy to forget. Writing is hard, too. We have to remember lots of words and thousands of characters (汉字). In English, there are only 26 4.

    At home, I5English with my family. But now, we speak some Cantonese (广东话) because we watch films 6 that language.

    My mom has come to love F4, a Chinese boy band (组合). They are in the film Meteor Garden (《流星花园》). We all7the TV series, and we learn Cantonese8 saying some funny words from the TV series to each other.

    It's fun to speak Cantonese with my Chinese friends. It 9funny because we can't say the words just right.

    Young Chinese Americans know that our culture (文化) is getting lost, so we try to10something.

公安人员在破案时，发现一段被害人的下肢骨，经过解剖发现骨髓腔中的骨髓为红骨髓，据此推理受害人的年龄为（   ）

读课文《快乐的节日》，你能用本文中的词语填一填吗？

我们像小鸟一样，等身上____的长____。

小明同学的质量为50kg，他站立时，双脚鞋底与地面接触面积约为0．04m²．求：

（1）小理同学站立和行走时对地面的压强分别是多少。

（2）小明在网上查找资料后，了解到我国研制的“黄山号”潜水艇能潜入到1000米的海里，经有关专家介绍该潜艇外皮均由极厚纯钢打造。其表面积为8000m²。试求该潜艇在1000m海深受到的压强及压力为多少？