— Do you know what EU stands for, Tommy?

— Sure. It stands for the European Union, _____ European political and economic organization that

     encourages trade and friendship between _____ countries that are members. [ ]

A. a, the

B. an, the

C. a; the

D. an, /

仿照下面的示例，照应给出文句的意思另写两句话，要求使用的诗文名句贴切合理。

　　中学的许多课程，可以用诗文名句风趣地加以说明或议沦。比如，生物课：“他年我若为青帝，报与桃花一处开。”物理（实验）课：“纸上得来终觉浅，绝知此事要躬行。”又如，________________________，再如，_____________________。