农业上的“()“一词源于宋代。
参考答案:梯田
Mr. Crossett ___ his old friend when they met at the railway station.
A.shakes hand with
B.shakes hands with
C.shook hand with
D.shook hands with
男,28岁,近半年来腹泻与便秘交替发生,近3个月来腹部隐痛,近2天解鲜血便,腹部触诊和直肠指诊未发现肿块,钡灌肠示降结肠肠壁僵硬,可见充盈缺损。应诊断为()
A.乙状结肠癌
B.直肠壶腹癌
C.肠结核
D.溃疡性结肠炎(增殖型)
E.降结肠癌