勘合
参考答案：明初控制中央衙门政令、辨识真伪的“行移动勘合”制度所派生，至清朝，沿用为证实所差遣官员身份，及动用驿站马匹的凭证性公文文种。
中间检查危险点有哪些？
Although the social sciences different a great deal from one another, they share a common interest in human relationship.
A．move
B．differ
C．change
D．varies
