89. 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. 选D
employer 雇主，老板 or表示主动
employee 雇员 ee在名词词尾表示被动的
assiduous 勤奋的 (总坐在那里的人， 总as坐sid 在那里的人)
insidious 阴险的，狡诈的(总坐在里面的人)
derelict 遗弃物 (敌人离开后留下的)
relics 遗骨 (阿姨死了以后留下的遗骨)
relict 残余物
penetrate 穿透
permeate 渗透
diffuse 弥漫
diversify 使不同
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