After 20 months of construction, Shanghai—Hangzhou high—speed railway        good use since October 26th.[ ]

A. was put to                          

B. has been put to            

C. has put to                          

D. is putting to  

男性，26岁，反复上腹痛4年，常于秋冬换季时加重，饥饿时加重，餐后可缓解。

该患者2h前突发上腹剧烈疼痛，难以忍受，最可能发生了（）

A.消化道穿孔

B.消化道出血

C.消化道梗阻

D.胆石症

E.急性胰腺炎