To enjoy a better future, you should ____________ difficulties when you are faced with them.

A．go over

B．get over

C．take over

D．turn over

突然视力下降伴有眼痛见于

A．视网膜脱离

B．急性闭角型青光眼

C．玻璃体出血

D．缺血性视神经病变

E．视网膜静脉阻塞