题目

（本题满分8分）计算：（1）；                  （2）．  答案：解：（1）原式．················································································ （4分）（2）原式解析:略 唐太宗开创的治世局面是（ ）A．“开皇之治” B．“贞观之治”C．“政启开元，治宏贞观” D．“开元盛世”