首页 / 百科 / 内容详情 The New Stone Age around 10,000 years ago saw the invention of metal tools and the wheel. 2022-04-26 6次阅读 invention The around The New Stone Age around 10,000 years ago saw the invention of metal tools and the wheel. A.正确B.错误正确答案:正确 Directions: Fill in the blanks with the following words: education training possibilities realities wisdom useless It is difficu The development and use of advanced tools is the simplest form of technology. 猜你喜欢 Before the invention of paper, what had been used as writing material? Which invention was made for navigation? The definition of invention is: Invention refers to a new technical solution suitable for practical use that is applied to the s There are three types of patents in China: invention patents, utility model patents, and design patents. A patent is a () for an invention granted by a government to the inventor.