① Are these all ours? ____ A. It is Zhang Peng's.
② Whose is it? ____ B. Yes,it is.
③ Is this yours?____ C. Yes. they are.
①了解国际形势的现状和发展,扩大自己的视野
②进行多种合作与交流,获得更多的知识
③拉近与世界的距离,享受跨越国界、无限沟通的乐趣
④找到我们的精神寄托,打发无聊时间