题干
— Would you like to go shopping with me now?
— Sorry, I have to finish my homework before supper.
A：might
B：must
C：can
答案(点此获取答案解析）
B
— Would you like to go shopping with me now?
— Sorry, I have to finish my homework before supper.
A：might
B：must
C：can
2Z(g)，已知X2、Y2、Z的起始浓度分别为0．1mol/L、0．3mol/L、0．2mol/L，在一定条件下，当反应达到平衡时，各物质的浓度有可能是