I remember that ＿＿＿＿ an old church on the top of the hill many years ago.

A．used to be there

B．there used to be

C．there used to have

D．there had

短QT综合征唯一有效的治疗方法为（）

A.基因治疗

B.抗心律失常药物治疗

C.导管射频消融

D.置入心脏复律除颤器

E.手术治疗