A、Parent Board. B、District Court. C、Teachers’ Union. D、School Committee. C综合推断题，文章提到，教师协会的发言人在新闻发布会上声称罢工会一直持续到学校委员会同意开听证会解决此争端为止

Once again in Richfield Heights today, there were no classes in the public elementary and secondary schools. This marks the eleventh day that the schools in that community have remained closed. Teachers are still on strike despite the back-to-work order issued yesterday by the District Court. A spokes person for the Teachers’ Union stated at a press conference today that the strike would continue until such time as the School Committee agrees to a public hearing to settle the dispute. According to the spokesperson, wages are not an issue in the dispute. At issue is a new role passed by the School Committee, which eliminates paid sick leave from the teachers’ contract. Under the new contract, teachers would receive no salary for any day on which they failed to appear due to illness. School administrators, on the other hand, would continue to receive fifteen days of paid sick leave annually. The Parent Board, which was initially sympathetic to the teachers’ position, has urged the teachers to return to work until a settlement can be reached. Spokespersons for the School Committee are refusing to comment on the latest developments.