2. 外语
  3. At first, little______that we were sitting on top of a fundamental discovery in AIDS research.

At first, little______that we were sitting on top of a fundamental discovery in AIDS research.

admin2010-02-22  67
问题 At first, little______that we were sitting on top of a fundamental discovery in AIDS research.
选项 A、we knew
B、we did know
C、did we know
D、do we know
答案C
解析
转载请注明原文地址:https://kaotiyun.com/show/Jn9K777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)