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

"虚"的病机概念是（）

A.脏腑功能紊乱

B.正气不足，邪气不盛

C.气滞血瘀，脉道不通

D.正气不足，邪气亢盛

E.宿食内停，腑气不通