After a long walk, the girl felt very __________.

A．happy

B．tired

C．angry

D．relaxed

维生素K对下列哪种出血无效

A．新生儿出血

B．梗阻性黄疸引起出血

C．香豆素过量出血

D．阿司匹林所致出血

E．纤溶亢进引起的出血