题干
据所听到的内容选择正确答语（ ）
A：I totally agree.
B：It's not easy.
C：It's not a big deal.
答案(点此获取答案解析）
C
③CH3CH2Br ④ 
⑤ 
⑥ 
⑦ 
⑧ 
⑨ 
⑩ 
