党的组织制度的核心是民主集中制。
参考答案：对
Bob's lectures ________ a fairly wide range and I can't sum up what he says in a few sentences.[ ]
A．covered
B．conveyed
C．considered
D．commanded
公司不按规定为我缴纳社保怎么办？可以投诉吗？怎么 * * ？
