John _____ a doctor when he _____ up.[ ]

A. is, grow                

B. are, grow

C. is going to be, grow              

D. is going to be, grows

单侧上眼睑下垂见于

A．重症肌无力

B．先天性上眼睑下垂

C．动眼神经麻痹

D．面神经麻痹

E．外展神经麻痹