八脉交会穴中通于督脉的腧穴是（）
A.照海
B.后溪
C.申脉
D.外关
E.足临泣
参考答案：B
Don't laugh at her. She is _____ any of the others in your class.[ ]
A. as clever a student as
B. as a clever student as
C. so clever a student as
D. so a clever student as
我国取水办法规定，需要延长取水期限的，须在取水许可证期满______日前提出申请。
A．30 B．45C．60 D．90
