男性,46岁,乙状结肠镜检术后半小时,出现剧烈疼痛,下腹压痛明显,肌紧张,你认为最有可能的原因是
A.直肠息肉出血
B.内痔出血
C.直肠出血
D.肛管损伤
E.肠穿孔
参考答案:E
If you like to try Chinese food, you can go to a _________.
A.sports center
B.shopping mall
C.restaurant
D.cinema
What _______honest boy! And he is ______ best student of all.
A.a; a
B.an; the
C.a; the
D.the; the