题干
— Someone might see us.
— ___________? We are not doing anything illegal.
— ___________? We are not doing anything illegal.
A：What’s u
B：What if
C：How come
D：So what
答案(点此获取答案解析）
D
2Cu+CO2↑中，氧化剂是（ ）
的绝对值是（ ）