根据内容完成Sally's family tree.

    I'm Sally, I'm a student in No.14 Middle School. This is my family tree. You can see it is a big family. My father is Jonathan, my mother is Claire. They have three children. My brother's name is William and my sister's name is Olivia. My grandparents Jerry and Elizabeth have two sons. My uncle Mike and my aunt Sarah have a son, his name is Joseph. He is my cousin. He is four years old. We all love him very much.

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标志着我国初步建立起社会主义基本制度的事件是（    ）

读“地球表面受热过程示意图”，回答下列各题。