ExercisesDownloads打开原始音频 / 视频 →C1 LISTENING TESTSQuestion 1 / 7请完成全部题目,最后查看答案与解析LISTENING · C1 ▶Listen and answerENAccording to Dr Hammond, what did bipedal walking change?AHow humans moved, thought, and socialised.BHow humans moved and communicated.CHow humans moved, thought and planned.保存并进入下一题 →