问题
选择题
-Why is he feeling down today?
-Because the suggestion he________has been turned down.[ ]
A．put away
B．put up
C．put down
D．put forward
答案
答案：D
搜题请搜索小程序“爱下问搜题”
-Why is he feeling down today?
-Because the suggestion he________has been turned down.[ ]
A．put away
B．put up
C．put down
D．put forward
答案：D
4NO(g)+6H2O(g)；△H=-905.9kJ.mol-1，下列叙述正确的是 [ ]