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Unit 4 · Lesson 1Tomorrow’s WordAsk and discussion?Step One：Compared to 20 years ago, how do you think the technology has changed our lives?___________________________________________________________________________________________________________________________________________________________________________________________Ask and discussion答案：We have more cars and computers which/ that are more and more popular.Go shopping online.Needn’t carry cash and use credit cards.Instead of going to the bank you can use a computer and a telephone to pay for bills.Fast-reading?Step Two：Read the text and judge the following statements is true (T) or false (F)．1. In spite of the development of computers，it is unlikely to live in virtual reality. ( )2. The text infers to us that worry is necessary and