如图，AB、CD是⊙O的直径，AB∥DE，AC=3，则AE=____ ．

You ______a teacher.  I ______ a student. My sister ______a student,  too.

根据句意及首字母提示完成句子

1. Xi Jinping is about sixty y____old now.

2. There are some long b____  over the big river. People and cars can cross them.

3. The Changjiang R____ is very famous（出名的）in the world(世界).

4. The v____  in this village like keeping（饲养）pigs（猪）．

5. If your dream comes t____, you must be happy.

隋唐的三省六部制完善了自秦以来的专制主义中央集权制度，突出反映在
①中央决策的民主化      
②任人唯贤的原则得以贯彻
③三省六部既有分工又相互制约，提高了行政效率
④使相权一分为三，加强了皇权