— Is there a library in Gaochun?

— Yes, a new library _______ and is now open to the public.

A．will be built

B．was built

C．has been built

D．is built

治疗克隆病的首选药物是（）

A．柳氮磺胺吡啶

B．肾上腺皮质激素

C．奥美拉唑

D．丙谷胺

E．抑肽酶