A complete Oracle Bone Inscriptions consists of four parts, namely preface, (), Zhan Wen and proofreading Wen ().

Answer: life words (interrogative words)

Analysis: Generally speaking, a complete Oracle Bone Inscriptions consists of the following four parts. (1) Narrative (preface, preface): Describe the time, place and soothsayer of divination. (2) Life language (question language): The tortoise's life language, explaining to the tortoise what to ask. (3) Note: Record omens and good or bad judgments. (4) Witness: the result or fulfillment after divination.