It is hard for me to imagine what I would be doing today if I _______ in love at the age of seven, with the Melinda Cox Library in my hometown.

A．wouldn’t have fallen

B．had not fallen

C．should fall

D．were to fall

许多国家的金融立法中都明文规定，商业银行等存款机构向中央银行申请再贴现的票据，必须是（）。

A.真实票据

B.国库券

C.银行承兑票据

D.央行票据