视网膜脱离复位术后视力预后的关键因素是（） A.视网膜裂孔的大_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

视网膜脱离复位术后视力预后的关键因素是（）

A.视网膜裂孔的大小

B.视网膜裂孔的数量

C.是否发生黄斑脱离及时间

D.格子样变性的出现与否

E.是否存在近视

答案

参考答案：C

选择题

It was not until midnight they reached the camp site. [ ]

A. that

B. when

C. while

D. as

选择题

You ________ pay too much attention to your reading skill, as it is so important.

A．can't

B．shouldn't

C．mustn't

D．needn't