搜题请搜索小程序“爱下问搜题”
问题 单项选择题

经脉是经络系统的主体，全身共有（）经穴。

A.420个

B.381个

C.361个

D.352个

答案

参考答案：C

选择题

Was it in this hospital _______ she lived for ten years ______ she was trained to be a real nurse.

A．that; which

B．which; that

C．where; that

D．that; where
查看答案
解答题
化简求值：[
4ab
a-b
+(
a
b
-
b
a
)÷(
1
a
+
1
b
)]÷（a2+2ab+b2），其中a=
3
+1，b=
3
-1．
查看答案