问题
选择题
John is _____ honest boy. He said he would come here in _____ hour.[ ]
A. a; a
B. a; an
C. an; a
D. an; an
答案
答案：D
搜题请搜索小程序“爱下问搜题”
John is _____ honest boy. He said he would come here in _____ hour.[ ]
A. a; a
B. a; an
C. an; a
D. an; an
答案：D
反应的化学方程式为 。