In paragraph 8, the author contrasts the concepts of physical and chem-考呗网题库移动版

不定项选择题In paragraph 8, the author contrasts the concepts of physical and chemical changes by
　　

参考答案D

解析:

不定项选择题根据听到的材料，回答题。
What is the main idea of the lecture?

不定项选择题Listen again to part of the discussion．Then answer the question．

不定项选择题According to the professor, why did the ancient Romans build the Coliseum?