“2013年3月3日中国人民政治协商会议第十二届全国委员会第一次会议在北京人民大会堂召开，2013年3月5日第十二届全国人民代表大会第一次会议在北京人民大会堂召开”据此说出北京的职能之一是（ ）

My name is Lily. I'm eight years old. This is my sister. Her name is Lucy. We are twins(双胞胎).Our hair is brown. Our eyes are blue. We look the same(一样), but I like pink. My T-shirt is pink. My shorts are white. Lucy likes orange. Her T-shirt is orange. Her shorts are black. I have a green schoolbag. Lucy's schoolbag is brown.