题干
Do you often treat _______ to some snacks and drinks?
A：you
B：your
C：yourself
D：yours
答案(点此获取答案解析）
C
Do you often treat _______ to some snacks and drinks?
A：you
B：your
C：yourself
D：yours
和
进行如下反应：
，反应一段时间后达到平衡，测得生成
，则下列说法正确的是