 What does " writing system" refer to?
Dear teachers,
please look at the following paragraph.
When early humans began farming, it was a revolutionary change in human life. It was thousands of years later that people developed a writing system. In less than fifty years people have developed computers that can do most of the things humans can do.
What does " writing system" refer to?
according to the text, the "writing system" was invented about 50 years earlier than the computer was invented. what is it? |