A. Large swaths of digital heritage. B. Vital cultural artifacts. C. Important digital material. D. The lack of information. 参考答案:D 答案解析:..future generations could find an enormous“black hole in people's collective memory”if important di
第30题: [单项选择]Mother decided to go to the supermarket as soon as she ______. A. finishes what she did B. finished what she did C. finished what she was doing D. would finish what she was doing 参考答案:C 答案解析:状语从句题。在时间状语从句和条件状语从句中,不使用将来时态,将来概念可以用现在时或过去时来表示。所以选项[D]错误。由于主句为过去时,所以[A]错误。根据句义,完成手头正在做的事,所以选择[C]。