题干
Where _______ he _________? Do you know?
A：is; come from
B：do; come from
C：does; come from
D：does; comes from
答案(点此获取答案解析）
C
pC(g)达到平衡后，压缩容器的体积，发现A的转化率随之降低，下列说法中，正确的是
