题目

What did the woman buy for her husband for Christmas? A . book. B . A recorder. C . A watch. 答案：C3. 两足直立行走可使人类祖先()①前肢获得解放②更加适应树栖生活③促使感官集中于前部④促使骨盆、肌肉等发生变化   A. ①②④   B. ①②③   C. ②③④   D. ①③④