下列反映唐和吐蕃交往史实的是（　　）

下列河流最终流入北冰洋的是（　　）

读课文《瀑布》，回答问题。

      诗中“千丈青山衬着一道白银”中的“千丈”写出了____，“白银”是指____，本句采用了____修辞手法，诗句中把____比作____。

⑴The man couldn't find a ____ seat.

⑵The man asked the lady put the dog on her ____.

⑶Finally the bus driver ____ the bus.

⑷The man took out a ____.

⑸Guess what the dog had in its ____.