有人说，是哥伦布给美洲带来了今天的繁荣；而委内瑞拉总统查韦斯却说，哥伦布是人类历史上最大的侵略与种族灭绝的先锋。上述评价的差异反映了价值判断的[ ]

A、客观性

B、随意性

C、相对性

D、时代性

Powell calls for drawdown from Iraq by mid-2007. His comments break his long public silence on the issue and place him () with the administration.

A. at will

B. at ease

C. at times

D. at odds