Listening and vocabulary
听力和词汇
Work in pairs. Look at the pictures and answer the questions.
结对练习。看图片并回答问题。
1. How have these inventions changed people's lives?
这些发明怎样改变了人们的生活？
2. Which one do you think is the most important?
你认为哪一项（发明）是最重要的？
3. What other important inventions can you think of?
你能想起其他什么重要的发明？
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