Let's Read 1-2 4 p.54-55 About 700 years ago, people started to make mechanical clocks. At first, they used weights to power these clocks. The clocks told the hour with bells. However, the weights were big and heavy, so (were/to/difficult/clocks/move / these ). About 500 years ago, people improved their clocks. They used springs to power the clocks. The 5 springs were small and light. So people could move the clocks easily. Eventually, people began to carry watches. Today, we have clocks and watches everywhere. This is the result of many great inventions and many people's efforts. Even now, clocks and watches are improving.
本文の内容について,次の問いに3語以上の英語で答えなさい。 1. What kind of clocks did people start to make about 700 years ago? 2. About 500 years ago, was it difficult to move the clocks? 3. Are clocks and watches still improving?