题干
— ________ is the bookstore, please?
— It's near the cinema.
A：Where
B：How
C：When
答案(点此获取答案解析）
A
— ________ is the bookstore, please?
— It's near the cinema.
A：Where
B：How
C：When
2＝ 2NH3的能量变化如图所示，该反应的热化学方程式是