单选题 Too often teachers' ______ with parents are devoted to petty accounts of children's misbehaviors, complaints about laziness and poor work habits and suggestion for penalties and rewards at home.

A. acquaintance
B. association
C. conferences
D. collaboration

【正确答案】 C

【答案解析】[解析] conference“商议，商谈”；acquaintance“熟悉”；association“交往，联系”；collaboration“合作”。