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

________ 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

答案及解析： A