题干
—May I have a look at _______ book tonight?
—Of course, you can. I have ________ old one at home.
—Of course, you can. I have ________ old one at home.
A：the; a
B：a; the
C：the; a
D：the; the
答案(点此获取答案解析）
C
N2＋CO2＋H2O（未配平）。下列关于该反应的叙述正确的是 （ ）