依次填入下面一段文字横线处的语句，衔接最恰当的一组是（ ）别的故都，把历史浓缩到宫殿，而南京，把历史溶解于自然。___________，___________。___________，___________，___________，大大方方地畅开一派山水，让人去读解中国历史的大课题。①南京既不铺张也不拥挤 ②也不存在可以舍弃历史的游玩③在南京，不存在纯粹学术性的参观 ④杭州是过于拥挤的沉淀⑤北京是过于铺张的聚集

After he did his homework last night, he went on TV.

clouds, you would find the airplanein the sky easily

it is a good thing I did not get thepost I had applied for, though I must admit that I was disappointed at thetime.

I think the environment is becoming worse and worse.— Yes, I really don’t know we can do about it.