—Our train to Shenzhen didn’t leave until 14:30 because of something wrong with the railway.

—Such a long delay! This train       at 13:00.

A．left

B．will leave

C．leaves

D．has left

与幽门螺杆菌感染密切相关的是（）.

A.弥漫型（胃型）胃癌

B.食管腺癌

C.胃黏膜相关淋巴组织淋巴瘤

D.结肠癌

E.胃息肉