题目

国庆节到了，园丁叔叔把一盆盆的菊花摆成了3个“7×7”的方阵来布置人民广场。最外圈用红色的菊花，其余用黄色的菊花。一共要准备两种颜色的菊花各多少盆？（先画图表示1个菊花方阵的队列，再解答） 答案：解： 红色：7×4-4 =28-4 =24（盆） 24×3=72（盆） 黄色：5×5×3 =25×3 =75（盆） 答：一共要准备红色菊花72盆，黄色菊花75盆。John began to study French last Sunday. ____________A. His brother did so. B. So did his brother.C. So his brother did. D. His brother so did.