我国宪法规定：“中华人民共和国的一切权力属于人民。人民行使国家权力的机关是全国人民代表大会和地方各级人民代表大会。”这说明（    ）

我国南方地区比较丰富的能源是（　　）

如图，在Rt△ABC中，∠ACB=90º，∠A=30º，BC=2，将△ABC绕点C按顺时针方向旋转n度后，得到△EDC，此时，点D在AB边上，斜边DE交AC边于点F，则n的大小和图中阴影部分的面积分别为（  ）

    This is a picture of Mr. Li's family. The man in the middle is Mr. Li. The woman is Mr. Li's wife. They have two sons. The child behind Mr.Li is Li Lei. He's thirteen. The other in front of Mrs. Li is Li Ming. He is eleven. Li Lei and Li Ming are in the same school, but not in the same grade. Li Lei is in Grade Two. Li Ming is in Grade One. They are good students.

—__________?

—At six o'clock in the afternoon.