— What's the matter with Tim?

— Oh. Tim's cell-phone was left in a taxi accidentally, never          again.[ ]

A. to find

B. to be found

C. finding

D. being found

肺癌死亡率增加，与下列哪些职业接触有关（）

A.氯仿

B.铀

C.石棉

D.甲苯二异氰化物

E.二氧化硅