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173. The professors presentation was both ______ and ______ : though brief, it was instructive.
A. verbose, mundane
B. concise, elaborate
C. comprehensive, edifying
D. succinct, enlightening
E. provocative, technical
174. With its large circulation, Essence magazine has enjoyed ______ only recently challenged by new publications aggressively seeking female African-American readers.
A. an aggregation
B. an inclination
C. a prognosis
D. a retrenchment
E. a preeminence
