真题练习

505.Sometimes proper answers are not far to seek _____ food safety problem.

A.in
B.to
C.on
D.after

506.I always wanted to do the job which I'd been trained _____.

A.on
B.for
C.by
D.of

答案解析

505.答案是B;考查介词的用法。

506.答案是B;此题以定语从句的形式考查介词的用法。其中train sb.for the job意为:为这项工作而培训某人。