In such a background, his white hair was particularly his dark skin．
A. in relation to
B. in need of
C. in contrast to
D. in favor of
网友回答
A. in relation to
B. in need of
(答案→)C. in contrast to
D. in favor of
解析：A．in relation to关于，B．in need of需要，C．in contrast to相比之下，D．in favor of支持，赞同，句意：在这样的背景下，他的白发和黑皮肤形成鲜明的对比。所以选C。