便秘的针灸治疗，应该以何经为主？

A.足阳明、足少阳经穴

B.手阳明、足少阳经穴

C.足阳明、手少阳经穴

D.手阳明、足阳明经穴

E.足阳明、足太阴经穴

At the end of last month, ten primary schools ______ with the help of Project Hope.

A．had set up

B．had been set up

C．set up

D．were set up