问题
选择题
I work ____ people and I like talking ____ people. [ ]
A. on; at
B. with; to
C. in; with
D. at ; to
答案
答案：B
搜题请搜索小程序“爱下问搜题”
I work ____ people and I like talking ____ people. [ ]
A. on; at
B. with; to
C. in; with
D. at ; to
答案：B
氧化镁 
氧化铜+二氧化碳+水