【热点话题】
science and modern technology(科普知识与现代技术)
知识与人类文明
体裁：说明文
写作思路：
科技的发展对人类文明的贡献——学习知识的重要性
【美文诵读】
Human civilization is_mainly_attributed_to① the achievements of science and technology.With_the_broadening_of_human_
knowledge② we know more and more about the world we are living in.Human beings use their knowledge to change the environment，utilize the natural resources，and create a fine world which is suitable for mankind.
