下述消化性溃疡的特点错误的是()
A.GU为餐后痛
B.DU为空腹痛、夜间痛
C.患者均有上腹痛
D.出血后疼痛的节律性消失
E.可因情绪波动诱发疼痛
参考答案:D
At minus 130 C, a living cell can be _____ for a thousand years. [ ]
A. spared
B. protected
C. preserved
D. developed