专家认为，海洋如果没了洋流，那么海洋将会死亡，海里的生物将不复存在．这说明了什么道理？

    Hello, boys and girls. Welcome to this place. This is a f____ station. It's big. We can see some fire engines. They are r____. How many fire engines? Let me count. One, two, three…Ten are new, a ____two are old. The man is a f____. He's Jill's father. He's Mr Black. He's a t ____man. He likes helping people. He likes his job.

①个人不能离开社会独立存在       ②个人的生存和发展离不开社会提供的各种条件

③青少年关心社会，可以从关注时事政治做起     ④社会的进步发展离不开个人

全面建成小康社会，要坚持和完善民主集中制的人民代表大会制度，不断扩大人民民主；要坚持开放、合作、共赢，争取有利的国际环境。