2. 外语
  3. It’s uncertain______the experiment is worth doing.

It’s uncertain______the experiment is worth doing.

admin2010-02-22  47
问题 It’s uncertain______the experiment is worth doing.
选项 A、if
B、that
C、whether
D、how
答案C
解析
转载请注明原文地址:https://jikaoti.com/ti/XqHMFFFM
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)