简答题:A.Difficult but rewarding.B.Varied and interesting.C.Time-co 题目分类:英语六级 题目类型:简答题 查看权限:VIP 题目内容: A.Difficult but rewarding.B.Varied and interesting.C.Time-consuming and tiring.D.Demanding and frustrating. 参考答案: 答案解析: