题目

-What do you think of the book A Child’s Garden of Verses? -Wonderful．It’s __________one I have ever read． A．a better                   B．a great                    C．the best                  D．a good 答案：C简算：6715×2.5-212×4715；（217×113）×51×39；8.8×12.5×4（用两种方法计算）．