【单选题】What does the woman want to do with the fossil?
B.
Put it in her collection.
D.
Leave it with her professor.
【简答题】A.They were just as busy as people of today. B.They saw the importance of collective efforts. C.They didnt complain as much as modem mann D.They lived a hard lifebyhunting and gathering.
【判断题】淋巴细胞和肝细胞都能启动特异性的免疫反应。()
【单选题】Utah Open Course Ware Alliance has provided materials for 30 courses in a planned collection.
【单选题】The book covers a wide______ of topics on international politics.