题目

. --- Great changes have taken place in your city! --- Yes, our city has developed into a big city, which is ______ it used to be. A. three times larger than that             B. three times the size larger than what C. three times the size of what              D. as three times the size as that 答案：C10．李明把一个数乘$\frac{5}{8}$，错算成除以$\frac{5}{8}$，结果是5，正确的结果是$\frac{125}{512}$．