单项选择题 男性，20岁，既往有消化道溃疡病多年，大量饮酒后6小时，突发上腹部疼痛，并出现腹胀，服抗生素后不能缓解，症状加重，逐于6小时后急诊求治根据病人的临床表现，不应考虑的诊断是（ ）

未知题型 主要用于桥梁、建筑等钢结构制作中的金属材料是（ ）。

未知题型 听力原文： (27[B]) World marathon record holder Paula Radcliffe has decided to fun at 34 in the 2008 Olympic Games in Beijing Athens disappointment. (26[C]) The Briton failed to finish in either the marathon or 10,000m in last August's Games in Athens. 'It was never a case of if I get what I want in Athens I will back off,' Radcliffe told the Dally Mail. 'I always wanted another Games. I hope to make 2012 too, maybe not at the same revel but I hope to make the team.' (28[A]) She said the misery of Athens offered her a new incentive. 'Underneath it all, it has made me more determined to come back and show what I can do,' she said. Radcliffe has no object on her schedule for the rest of the year and will probably make herself away from race till next April's London marathon.What was Paula Radcliff's performance like in Athens?A．It was a success.B．She failed one event in Athens.C．It was a failure.D．She had a new world record there.