膜性肾小球肾炎的特征性病理变化为
A．上皮下驼峰状沉积物B．基膜增厚，钉突形成C．基膜增厚，双轨征D．新月体形成
参考答案：B
Please stop and listen to the teacher carefully.[ ]
A. talk
B. talking
C. to talk
D. talked
导游人员在与游客交往服务过程中要注意哪几个问题?
