2. 外语
  3. It is pretty well understood______controls the flow of carbon dioxide in and out the atmosphere today.

It is pretty well understood______controls the flow of carbon dioxide in and out the atmosphere today.

admin2010-02-22  44
问题 It is pretty well understood______controls the flow of carbon dioxide in and out the atmosphere today.
选项 A、that
B、when
C、what
D、how
答案C
解析
转载请注明原文地址:https://jikaoti.com/ti/eOHMFFFM
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)