因为没有了纸张，信息传播比较慢，写信也没办法写。 No paper,message delay too much,and no letter for communicating. 可能马拉松成了学校必考项目之一，时间一长，人类的体质明显增强，物种得到优化。 paharps Marathon is becoming one of the key subject for exams at schools, so peoples should become stronger for along time.More strong for mankind in the future.
Because without paper, information dissemination is slower, can not write either while writing letter. Perhaps the marathon has become the school and must take an exam of one of the projects , as time goes by, the human physique is obviously strengthened, the species is optimized.
答：不同的农作物参与造就了不同的文明类型：玉米造就的是神秘 而生命力无比旺盛的玛雅文化、印第安文化；小麦造就的是抗争性的 伊斯兰文化、政治文化；水稻造就的是亚洲南部...详情>>
答：Behave yourself! Be careful to your words! Mind your mouth!详情>>
答：1.要以大量的阅读和听力做基础。在读和听的过程中，积累了词汇，掌握了句型，熟悉了用英语表达思想的方式，最重要的是培养了语感。 2.同时，练习英语口语也需要用多种...详情>>
