Quite a few of the swamps have become                 due to the industry development.    [ ]

A. endangered                

B. polluted    

C. horrified                  

D. terrified

乳腺癌来源于（）。

A.小叶间质

B.乳腺囊肿

C.导管内 * * 状瘤

D.乳腺导管上皮及滤泡上皮

E.乳腺纤维腺瘤