我国居世界首位的海洋资源是（　　）

已知：R₁、R₂、R₃、R₄表示原子或原子团

请回答：

党和中央在少数民族聚居地区实行的一项基本政策是(   )

    Look at this photo. The girl is from Beijing. She is six years old. She is not tall and she has short black hair. She has big eyes, a small nose and a wide mouth. She is in old clothes. Now she is lost（丢失了）. Please help us find her. Our phone number is （010）8699-8886. Thanks!
阅读短文，完成下列表格关于the girl的信息，每个空格一词。