In your schoolbags, most of you may have a pencil, some kinds of pens, a ruler and some books,1of these things grow in the fields. They were all invented by someone and made in factories. Thousands of years ago, no one2about these things. Even the simple invention has the greatest technological advance at its time.
Who3them? We don't always know. There have been thousands of inventions, large or4in human history. Some of these inventions have greatly 5the world, such as paper, printing and radios, and we are impressed by6. However, we have forgotten most of the other inventors — for example, 7invented the clock, or the lock to the door? We may not know. We should8the inventors for their clever ideas. New ideas are9. They can change our lives. Without inventions, we would still live in forests, with10to wear and no ice-cream to eat. Will you be one of the inventors, my dear friends?
