The most important thing about cotton in history is ______ part that it played in _____ Industrial

Revolution.  [ ]

A. /; /

B. the; /

C. the; the

D. a; the

AFP阳性时，对下列哪一种疾病最有诊断意义 （）

A.慢性活动性肝炎

B.肝转移癌

C.胆管细胞癌

D.原发性肝癌

E.肝硬化