16.This is a purely _______ problem, not a political one.
A. additional B. assiduous C. adamant D. academic
academic adj.學(xué)術(shù)的、理論的
additional 額外的、附加的
additive 添加劑
addendum 補(bǔ)充、附錄
adder 蝰蛇
deaf as an adder 充耳不聞
assiduous 勤奮的、好學(xué)的
insidious 陰險(xiǎn)的、狡詐的
preside (over) 主持
consider 考慮
adamant 固執(zhí)的
