在八脉交会中，与后溪相通的奇经是（）

A.任脉

B.督脉

C.阳维脉

D.阳跷脉

E.冲脉

—We’ll be back for our school’s ____anniversary ceremony(周年校庆).

—I see. That means you’ll have a get-together with your classmates in_______ years.

A．fifteen; seven

B．fifteenth; seven

C．fifteen; seventh

D．fifteenth; seventh