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

游客2024-10-26 36

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:http://tihaiku.com/zcyy/3818194.html

相关试题推荐

随机试题

最新回复(0)

Theoldmanwassoangryandspokesofastthatnoneofhischildrenunderstood_