In view of the worsening environment, the local government is seeking advice from Professor Smith, who is an expert it.
A. within
B. for
C. on
D. beyond
网友回答
A. within
B. for
(答案→)C. on
D. beyond
解析：within在之内、for为了、on在……上，关于beyond超过，根据题意选C，针对日益恶化的环境，当地政府正在寻求史密斯教授的建议，他在这方面是个专家。