【简介】感谢网友“雕龙文库”参与投稿，这里小编给大家分享一些[db:SEO标题]，方便大家学习。
1. His employers could not complain about his work because he was ______ in the performance of his duties.
A. derelict B. penetrating C. diversified D. assiduous.
employer 雇主，老板
employee 雇员
assiduous 勤奋的
insidious 阴险的，狡诈的
derelict 遗弃物
relics 遗骨
relict 残余物
penetrate 穿透
permeate 渗透
diffuse 弥漫
diversify 使不同
