巨球蛋白血症患者血清中有（）.

A.游离的轻链和重链

B.异常Ig轻链升高

C.无免疫功能的Ig重链

D.单克隆IgM增高

E.大量的M蛋白

If the duke has no children, who will           the title?    [ ]

A. succeed                    

B. succeed to    

C. resume                        

D. go on with