根据短文内容，选择正确答案。
   It’s Sunday morning．There are many people in the park，some boys  are playing basketball．There are some girls under a big tree．They’re singing and dancing．What are those women doing? They are drinking tea．Look at the woman in a blue coat．Who's she? She’s my mother．She is talking to Lin Feng．Lin Feng is her student．He is a good student．He studies hard．He’s good at all the subjects． And he's friendly to all his teachers and his friends．

下列生态系统中，有“绿色水库”之称的是（    ）

2001年中国作为亚太经合组织第九次领导人非正式会议的东道主，为APEC的发展作出相当大的努力。2003年，中国宣布加入《东南亚友好合作条约》。2004年东南亚海啸灾难发生后，中国政府大力提供人道主义援助。中国积极参与亚太地区事务的根本目的是