沙眼出现角膜混浊的原因包括（）
A.睑内翻、倒睫
B.角膜血管翳形成
C.合并细菌感染
D.上睑下垂
E.角膜缘滤泡瘢痕化
参考答案：A, B, E
The headmaster will not permit the change in the course, nor ______ it a thought.[ ]
A. does he even given
B. he even gives
C. will he even give
D. he will even given
一辆汽车一次可运150袋大米，2辆这样的汽车6次一共可以运大米多少袋？
