问题
选择题
— How many English books can you see?
— __________________.[ ]
A. Yes
B. many
C. Five
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— How many English books can you see?
— __________________.[ ]
A. Yes
B. many
C. Five
答案：C
2NO + O2在体积不变的密闭容器中反应，现有以下几种说法：