15.在我国至少已有两千多年的历史，最初称为“谒”的文书是(      )

A.柬帖                                                     B.聘书

C.名片                                                      D.悼词

16.属于单务合同的选项为(      )

A.买卖合同                                              B.赠与合同

C.承揽合同                                               D.购销合同

17.在我国，禁止作为合同标的的物品是(      )

A.货币                                                     B.劳务

C.工程项目                                               D.文物

18.章程中阐述机构组成和成员权利、义务的部分为(      )

A.总则                                                     B.分则

C.细则                                                      D.附则

19.“民告官”应使用(      )

A.行政诉状