问题 更新时间2023/4/3 12:59:00 This missile is designed so that once_____ nothing can be done to retrieve it. [ 2 分 ] A. fired B. being fired C. they fired D. having fired 答案 登录 注册 参参考考答答案案:: A 出自:江开 >> 乐山师范学院-综合英语