单项选择题
An enthusiast of sprightly music, Mendler surprised us all by proclaiming the final piece on the concert program, a lugubrious______as his favorite.（）
A．aria B．dirge C．sonata D．jig E．overture
单项选择题 Performing rote memory exercises rarely improves the______of any given subject, but______may nevertheless be useful to the student preparing for an examination.（）
单项选择题 IMPUDENT:（）
单项选择题 SUBSTANTIATION:（）
