骨瘤属于
A．直接缝合皮肤B．凡士林纱布覆盖包扎C．中厚游离皮片移植D．邻指带蒂皮瓣E．腹股沟轴型皮瓣
参考答案：A
一I just can’t stop worrying about the result of my medical examination.
一_________. There’s nothing you can do now but wait.
A．Take your time
B．Watch out for it
C．Just a moment
D．Sit back and relax
简述溶源性细胞的形成过程及其特点
