题干
The New Year party is ________ the evening of January 1st.
A：of
B：in
C：on
D：at
答案(点此获取答案解析）
C
The New Year party is ________ the evening of January 1st.
A：of
B：in
C：on
D：at
2C(g)；△H＞0，平衡移动关系如图所示。下列说法正确的是