题目

三年级有男生86名，女生82名，如果男生和女生混合分成7组进行比赛，平均每组有多少名？ 答案：【答案】24名【解析】用男生人数加女生人数，求出总人数，再除以7，就是每组的人数，据此解答。（86＋82）÷7＝168÷7＝24（名）答：平均每组有24名。With more forests being destroyed, huge quantities of good earth _____ each year.     A. is washing away                            B. is being washed away   C. are washing away                           D. are being washed away