— I'm sorry, I shouldn't have been so rude to you.  

— You ______ your temper but that's OK. [ ]

A. have lost

B. had lost

C. did lose          

D. were losing

单位工程大气压与单位标准大气压之间的关系（）。

A.二者相等

B.单位工程大气压大于单位标准大气压

C.单位工程大气压小于单位标准大气压

D.单位工程大气压是单位标准大气压的两倍