_____ 202 km Shanghai-Hangzhou high-speed railway, with  ____   deign speed of 350 km per hour,

began its operation on Oct 26,2010.[ ]

A. The; a

B. The; the

C. A; a

D. A; the

经前头痛，腹胀，逐渐出现失眠、抑郁，首选治疗措施是（）

A.人工周期

B.假绝经疗法

C.HRT

D.心理安慰与疏导

E.氟西汀