题干
The most important words in this sentence have been ______, so it doesn’t make any sense．
A：left out
B：held out
C：set out
D：made out
答案(点此获取答案解析）
A
A：left out
B：held out
C：set out
D：made out
H2O(g)＋CO(g)，反应所处的温度相同，但起始浓度不同。其中甲：CO2 = H2 =" a" mol；乙：CO2 =" a" mol ，H2 =" 2a" mol ；丙：CO2 =H2 =H2O(g)=" a" mol 。达到平衡时，CO2的物质的量由大到小的顺序是
