2. 外语
  3. Not until Kentucky’s Mammoth Cave had been completely explored in 1972____.

Not until Kentucky’s Mammoth Cave had been completely explored in 1972____.

admin2012-06-18  71
问题 Not until Kentucky’s Mammoth Cave had been completely explored in 1972____.
选项 A、when was its full extent realized
B、that its full extent realized
C、was its full extent realized
D、the realization of its full extent
答案C
解析 空格处的意思是：直到肯塔基州的猛犸洞在1972年完全勘探完毕，它的范围才全面被了解。本题not until结构位于句首时，主句部分需要倒装，应选择C。
转载请注明原文地址:https://kaotiyun.com/show/i8nO777K
0

考博英语

相关试题推荐
随机试题
最新回复(0)