GRE考试

根据网考网考试中心的统计分析，以下试题在2019/9/8日GRE考试习题练习中，答错率较高，为：46%
【单选题】The teacher has ------- catering to some students, but to retain his tenure, which effects only after a teacher has unanimously gratified his students, he offers his complaints -------.


A．a hesitancy about ... carelessly
B．an aptitude for ... sparingly
C．a repugnance toward ... tactfully
D．an enthusiasm about ... zealously
E．(E) a blitheness about ... carefully