食管异物并食管穿孔时,可出现的并发症是:()
A.皮下气肿
B.食管周围炎、纵隔炎
C.大血管溃破大出血
D.气管食管瘘
E.纵隔气肿
参考答案:A, B, C, D, E
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The conference ________ next year is of great importance .
A held B to hold C to be held D being held
从“______”到“______”文物保护计划,北京文物建筑修缮创下了百年,来规模最大、投资最多、延续时间最长的纪录。P159