题目

唐朝社会经济和国力发展的极盛时期是在：        A．唐高祖时期       B．唐太宗时期      C．武则天时期        D．唐玄宗前期 答案：DIt is a long time since I last saw you . This sentence means _______A．I had seen you for a long timeB．I have seen you for a long time C．I haven’t seen you for a long timeD．I saw you again before long