柏油样大便见于
A．十二指肠溃疡出血
B．溃疡性结肠炎
C．痢疾
D．结肠癌
E．胃穿孔
参考答案：A
I can't jump in the pool, the water is ___________ cold.[ ]
A. too
B. very
C. to be
D. that
下列字母是轴对称图形的是[ ]
A.S
B.F
C.T
D.P
