重整原料中含有极微量的氯、砷、铜、铅等元素是（）。

A.独立存在

B.以化合物的形式存在

C.以游离离子存在

_____ the fact that there was great prejudice against  women entering men's profession then, she

succeeded as  a manager of a big company.     [ ]

A. While                              

B. In spite of    

C. Despite of                          

D. As