“如果民族特性的和政治自由的观念，在几乎所有欧洲国家的领土划分和国内秩序中获得稳固结构，并且在法律和风俗中得到体现，那么从自由主义运动开始起，被推导或被预见的自由原则的另一结果却以截然不同的方式发生——准备实现‘欧罗巴合众国’”。在此后半个世纪终于演绎成“欧盟”。这主要因为

    It's 10:00 on Saturday morning. What are the students doing in different countries?

Zhao Tao, China

    He's a boy from Dalian, China. He is doing his homework at home. He wants to play basketball with his friends, but he can't. He has a lot of homework to do on Saturday.

Julia, America

    She is 13 years old. She is from Hawaii(夏威夷). Hawaii has the best beaches. Now she is lying on the beach and listening to music.

Lisa, Britain

    Now she is taking Rick, her pet dog, to the hospital, because he is sick and needs to see a doctor. So she can't go to the movies with her friends.

Dave, Japan

    He is a 15-year-old boy. He is playing football with his friends. He palys it very well. And he is the captain(队长) of the school football team

我国历史上最早设置的管理对外贸易的官署是(      )