粪便中发现肌肉纤维增多，横纹易见，还可见到细胞核，提示（）。
A.严重腹泻
B.胰腺功能障碍
C.消化道炎症
D.消化道溃疡
E.肠癌
参考答案：B
-Be careful! You might fall into the water.
-Thank you. I____.I______ so close to the pool.
A．didn't know; am standing
B．don't know; am standing
C．didn’t know; was standing
D．didn't know;Would stand
