男性，50岁，触及腹部包块3周。诊断（）
A.结肠癌
B.肠结核
C.溃疡性结肠炎
D.正常腹平片
E.肠梗阻
参考答案：A
It was very windy and cold, _____ they were still working hard in the field.
A. as B. till C. but
[复合型非选择题]54岁的男性，上班时他人发现其口角歪斜，诊断为左侧面神经麻痹
本病例治疗时应先用（）
A.大量抗生素
B.激素
C.针灸
D.维脑路通
E.卡马西平
