题干
They were pretty poor but most of their friends were even .
A：richer
B：badly off
C：worse off
D：well off
答案(点此获取答案解析）
C
CH3OH(g)。现在容积均为1 L的a、b、c三个密闭容器中分别充入1 mol CO和2 mol H2的混合气体，控制温度，进行反应，测得相关数据的关系如图所示。