该患者可能的并发症不包括
A.出血
B.穿孔
C.幽门梗阻
D.恶性贫血
E.癌变
参考答案:D
. The committee ______ over the problem among themselves for two hours.
A.has argued
B.has been arguing
C.have argued
D.have been arguing
指挥员在下达作战指令时要(),以稳定部队。
A.沉着冷静
B.声音洪亮
C.准确连贯
D.坚定从容
E.坚决果断