46、This is a purely _______ problem, not a political one.

A. additional B. assiduous C. adamant D. academic

[academic]

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academic adj.学术的、理论的

[/academic]

[additional]

additional 额外的、附加的

additive 添加剂

addendum 补充、附录

adder 蝰蛇

deaf as an adder 充耳不闻

[/additional]

[assiduous]

assiduous 勤奋的、好学的

insidious 阴险的、狡诈的

preside (over) 主持

consider 考虑

[/assiduous]

[adamant]

adamant 固执的

[/adamant]

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