Since then, more than 2 billion apps have been downloaded at prices ________ free to $900.

A．ranging between

B．ranging from

C．rang between

D．rang from

补写出下列名篇名句中的空缺部分。(5分)

小题1:惨象,已使我目不忍视了;        ，          。

小题2:             ，以望复关。

小题3:行道迟迟,               。

小题4:            ，哀民生之多艰。

小题5:制芰荷以为衣兮，           。