—We were surprised to hear that the reason________ she gave for her absence was________ her mother was ill.

—Yes，we saw her mother was at the supermarket that morning.

A．why；that

B．which；that

C．that；because

D．why；because

患者，男，51岁。阵发性腹痛，腹胀 2d，伴恶心呕吐，大便秘结，小便黄，舌红苔薄白，脉沉弦。查体：腹软，轻压痛，偶见肠型。诊断为肠梗阻，其证型是

A．瘀结
B．痞结
C．疽结
D．热毒
E．瘀血