How often do you exercise? I'm sorry to say that I exercise 1 than once a week. I know it is not a 2 way of living for a 3 boy. 4,I don't have much time to exercise. I love sports I used to be (过去是) a member of the swimming team and the 5 team in school. I 6 every Monday and Thursday, and I played volleyball every day after school. But I 7 the teams in September last year, because I had to spend much more time on my study. Now I have 8 time to-do sports or have fun. I hardly watch TV or play computer games, 9 .

    My father says 10 is very important. I hope I have time to exercise with him.

属于第____周期元素；第二层上有____个电子，最外层电子数目小于4个，它在化学反应中容易____电子，就带有____电荷，形成____离子，符号为____

大欧洲是欧洲先贤们的梦想，许多哲学家都孕育过“欧洲联合”“欧洲联邦”的思想。然而20世纪上半期，欧洲国家经历了两次惨绝人寰的世界大战的洗礼。二战结束后，西欧一些富有远见卓识的政治家总结大战的教训，认识到欧洲国家必须走联合之路，才能结束兵戎相见的历史，实现永久和平。根据所学知识，回答下列问题。
 （2）阅读下列材料：
总有一天，到那时……所有的欧洲国家，无须丢掉你们各自的特点和闪光点的个性，都将紧紧地融合在一个高一级的整体里；到那时，你们将构筑欧洲的友爱关系……    ──维克多•雨果

下列明清之际的思想中，最能反映当时社会的时代特征的是(  )