精选优质文档-倾情为你奉上Researchers Discover Why Humans Began Walking Upright（阅读）1 . Which of the following statements is NOT true according to the first two paragraphs? Many people question the simple human activities of walking and carrying items. 2. Dr. Richmond conducted the experiment with the purpose of finding what made our ancestors walk upright. 3. Kyoto, Universitys study discovered that chimpanzees. liked coula nuts better than oil palm nuts. 4. Why did the chimpanzees walk on tw
