三角形皮瓣三角前尖角在多少时可直接缝合
A．45°
B．90°
C．60°
D．70°
E．50°
参考答案：B
We tried ______ to persuade him to stay home, but at last, he went to the construction site despite his bad illness.
A．in case
B．in vain
C．in fact
D．in addition
燥热伤肺型咳血宜选方
A．重要病机之一B．多次、多食、多尿、消瘦、乏力C．肺、胃、肾D．清热润燥，养阴生津E．阴津亏损，燥热偏盛
