男,53岁,便秘、血便,大便变细,CT检查如图,最可能的诊断是()
A.肠Crohn病
B.直肠结核
C.溃疡型直肠癌
D.慢性溃疡性结肠炎
E.直肠淋巴瘤
参考答案:C
The front road was washed away, so we _____ get off the bus and walk over. [ ]
A. must
B. had to
C. should
D. need
如何理解强化企业创新主体地位和主导作用?