血性痰最常见的病因是()
A.支气管扩张
B.支气管肺癌
C.肺结核
D.肺脓肿
E.肺吸虫病
参考答案:C
Little Jim sat under the tree, ___ about that maths problem.
A.to think
B.and thinks
C.thought
D.thinking
假性尿失禁又称为()
A.完全性尿失禁
B.压力性尿失禁
C.充溢性尿失禁
D.急迫性尿失禁
E.功能性尿失禁