胆道结石，常表现
A．慢性规律性的上腹痛B．无规律性的上腹痛C．右上腹绞痛D．左上腹剧痛E．全腹剧痛
参考答案：C
A．10cm
B．15cm
C．20cm
D．25cm
It can be inferred from the statement that the Swedish social welfare system, which provides life-long care of its citizens, is no longer feasible and satisfactory.
