【名词&注释】
民事法律关系(civil legal relationship)、债权人(creditor)、生存权(right of existence)、知识点(knowledge point)、人类社会(human society)、人民当家作主(people as masters)、少数人(the minority)、剥削阶级(exploiting class)、还本付息(loan and interest payment)、委员会制(committee system)
[单选题]不规定还本付息(loan and interest payment)期限,债权人可按期取息,但无权要求清偿本金的国债称为( )
A. 长期国债
B. 特种国债
C. 不定期国债
D. 不上市国债