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题目内容双击单词支持查询和收藏哦～
The flood of innovation that has engendered many of last decade's technological breakthroughs has also claimed some victims in its wake: companies once at the (i)_____ of such innovation have now become (ii)_____.
- Blank(i)
- brink
- vanguard
- periphery
- Blank(ii)
- remarkably pioneering
- mostly obsolete
- increasingly relevant
vanguard , mostly obsolete 显示答案
以上解析由 考满分老师提供。
