The prices _________ up all the time and no one knows when it will become stable. [ ]

A. had gone    

B. have been going  

C. have gone    

D. had been going

我国城市居民前五位恶性肿瘤死因依次为（）。

A.肺癌、肝癌、胃癌、结直肠癌、食管癌

B.肺癌、胃癌、结直肠癌、膀胱癌、食管癌

C.肺癌、胃癌、肝癌、乳腺癌、结直肠癌

D.胃癌、肝癌、乳腺癌、肺癌、膀胱癌

E.胃癌、肺癌、肝癌、结直肠癌、食管癌