He stood there for         seemed a long time, wondering         he was going in the direction.

A．which; if

B．which; what

C．what; what

D．what; if

女性，35岁。胸骨后烧灼样疼痛、反酸3个月。食管吞钡检查：滑动性食管裂孔疝。24小时pH测定Demeester积分为13.8。目前，宜采取的治疗方法是（）

A.手术治疗

B.服用抑酸剂

C.调控饮食

D.中药治疗

E.随访观察