题干
I don't know _________.
A：what to do it
B：how to do
C：what to do
D：to do what
答案(点此获取答案解析）
C
I don't know _________.
A：what to do it
B：how to do
C：what to do
D：to do what
nB(g)＋pC(s) ΔH＝Q，温度和压强的变化对正、逆反应速率的影响分别符合下图中的两个图象，以下叙述正确的是( )
