---What made the students so upset?

---______ to go to the movie.

A．Having not been allowed

B．Not having allowed

C．Because of not having allowed

D．Not having been allowed

结膜细胞学检查时可见等量的嗜中性粒细胞和淋巴细胞增多时应考虑（）

A.细菌性结膜炎

B.病毒性结膜炎

C.过敏性结膜炎

D.沙眼

E.春季结膜炎