十二经脉的别络从本经分出的部位是：（）
A.四肢末端的指、趾
B.肘膝关节以下
C.肘膝关节以上
D.肩关节周围
E.踝关节周围
参考答案：B
When I got home last night, I was frightened to find that in front of my door_____ . [ ]
A. was seated a large dog
B. sat a large dog
C. was a large dog seated
D. did a large dog sit
在流程图中，泵的代号是（）。
A.B
B.P
C.E
D.K
