-----Do you know__________________?

-----At the end of July?

A．how soon is your sister coming back home

B．how often Nancy hears from her pen friend

C．when the London Olympic Games will be held

D．when will the new computer game come out

对病因明确的苯丙酮尿症患儿可以在早期进行（）

A.饮食治疗

B.氟哌啶醇治疗

C.哌醋甲酯治疗

D.甲状腺激素替代治疗

E.阿普唑仑治疗