原发性胆汁淤积性肝硬化最常见的早期症状为

A．乏力伴食欲缺乏

B．皮肤瘙痒

C．骨质疏松

D．夜盲症

E．出血倾向

22.  In order to  _______ the heart of his former sweetheart, the young man gave up smoking and alcohol, worked extra hard but all his effort ______ waste.

A．win back; went to

B．get back; came to

C．bring back; began to

D．take back; left to