问题
选择题
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
答案
答案：C
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。