关于神经鞘瘤的描述错误的是（）
A.是良性肿瘤
B.生长缓慢
C.包膜完整
D.易坏死、囊性变
E.肿瘤细胞呈梭形
参考答案：D
氮质血症时，内生肌酐清除率可较实际肾小球滤过滤高出10%，是由于
A．肾小管重吸收肌酐减少B．肾小管排泄少量肌酐C．肾小管合成少量肌酐D．肾小球滤过肌酐成倍增加E．尿量减少有关
Directions :
Study the following picture carefully and write an essay of 160- 200 words. In your essay, you should
1) describe the picture briefly,
2) interpret the meaning of the picture, and
3) give your comment.
You should write neatly on ANSWER SHEET 2.
