________ parents may have a stronger desire to see their children step into the world of ________.[ ]

A. Poor; rich  

B. The poor; rich

C. Poor; the rich  

D. The poor; the rich

胰头癌好发的部位是

A．胰尾部

B．全胰腺

C．胰体、尾部

D．胰颈、体部

E．胰头、颈部