问题
选择题
— Why are you so sad, Chen Jie?
— Because my dad is going to Beijing ____________ me.[ ]
A. with
B. without
C. and
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— Why are you so sad, Chen Jie?
— Because my dad is going to Beijing ____________ me.[ ]
A. with
B. without
C. and
答案：B
C(g)+D(g)过程中的能量变化如图所示，回答下列问题。