题目

1. They ______ on the program for almost one week before I joined them, and now we _____on it as no good results have come out so far. A. had been working; are still working    B. had worked; were still working C. have been working; have worked      D. have worked; are still working 答案： 买花。 （1）1枝菊花的价钱是1枝牡丹的3倍，1枝菊花多少钱？（2）1枝玫瑰的价钱是1枝牡丹的几倍？（3）如果30元钱买一束同样的花，你打算怎样买？   玫瑰 菊花 牡丹 数量/枝       价钱/元