细菌性角膜炎发病的危险因素有（）
A.维生素缺乏
B.长期使用免疫抑制剂
C.干眼症
D.糖尿病
E.角膜接触镜
参考答案：A, B, C, D, E
—Do you have enough men to carry these chairs? —No. I think we need _______ men.
A．another
B．other two
C．more two
D．two more
根部间隙
