Mr. Black is very happybecause the clothes made in his factory have never been   _____.[ ]

A. popular    

B. more popular    

C. most popular   

D. the most popular

肝局灶性结节增生中心纤维瘢痕含有（）

A.血管、胆管和炎症细胞； 

B.纤维组织和肿瘤细胞； 

C.纤维组织和胆管； 

D.肝动脉和门静脉； 

E.脂肪组织和肿瘤组织。