功能性消化不良与消化性溃疡的鉴别主要依据是()
A.上腹痛有无规律性
B.内镜检查有无病灶
C.上腹有无压痛
D.情绪波动是否加重症状
E.胃液分析
参考答案:B
质地均匀的骰子被抛起后自由落在桌面上,点数为“1”或“3”的概率是多少?
- How do you know so many English words?
- _____ reading all kinds of English books , like magazines and newspapers. [ ]
A. For
B. In
C. By
D. With