—Look at the picture on the wall. It ________be David’s.

—Yes, his name is on the first page.

A．can

B．can’t

C．must

D．mustn’t

此患者右眼诊断为

A．老年性白内障

B．继发性白内障

C．并发性白内障

D．后发障

E．外伤性白内障