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
【正确答案】
C
【答案解析】
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