题目

After a long discussion, they   an agreement. (协议) A. came into   B. came out   C. came to   D. came across 答案：C6．一根绳子长$\frac{3}{4}$m，用去这根绳子的$\frac{（）}{（）}$后还剩下它的$\frac{1}{3}$，用去了$\frac{1}{2}$m，还剩下$\frac{1}{4}$m．