根据下列材料请回答 69~72 题: 第 69 题 The purpose of the text is___. A.to show r
根据下列材料请回答 69~72 题:
第 69 题 The purpose of the text is___.
A.to show research done by today’s scientists
B.to describe life of the Stone Age
C.to tell about the early farming
D.to introduce an ancient site