— There was a lot of fun at yesterday's party. You ________ come. Why didn't you?

— What a pity! But I had no time because I had lots of homework to do. [      ]

A. must have  

B. should

C. need have  

D. ought to have

选择咨询单位时，咨询单位的实力主要体现在（）。

A.综合实力

B.相对市场地位

C.创新能力

D.组织管理能力

E.专业人员水平