问题
选择题
—Sandra failed to pass the exam.
— __________ ? Nobody works harder than she does.
A．How come
B．How about
C．Why not
D．What for
答案
答案：A
搜题请搜索小程序“爱下问搜题”
—Sandra failed to pass the exam.
— __________ ? Nobody works harder than she does.
A．How come
B．How about
C．Why not
D．What for
答案：A
CH3OH(g)+H2O(g) △H<0 在一恒温恒容密闭容器中充入1 mol CO2和3 mol H2，进行上述反应。测得CO2和CH3OH(g)的浓度随时间变化如下图所示。 