单项选择题 听力原文：W: National Flight 219 to Shanghai is delayed due to severe weather conditions. Please stand by for additional information.M: Oh no! I hate these long delays!Q: Where is the man?(14)A．At a railway station.B．At an airport.C．On an airplane.D．At a bus stop.

单项选择题 测定岩石的抗压强度的立方体试件尺寸为（）。

单项选择题 以下关于尚未更正错报与财务报表层次重要性水平的陈述中，不正确的是（）。