我国现存最完整、建筑规模最大的古戏楼是哪个？
参考答案：颐和园德和园大戏楼。
_____ you may face, you must gather your courage to finish it. [ ]
A. However a difficult task
B. What a difficult task
C. However difficult a task
D. What difficult a task
胃癌的护理包括（）
A.心理护理
B.营养护理
C.术前护理
D.术后护理
E.健康教育
