— People never use Mr, Mrs or Miss before their first names, do they? 　

—           , they only use them before their family names. [ ]

A. Yes, they don't

B. Yes, they do　　　

C. No, they don't　

D. No, they do

股票投资与债券投资相比（）

A、风险高

B、收益小

C、价格波动小

D、体现能力差