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There have been many great ___36_____ that changed our life. For example, wheel__37____ important today. In the second half of the 19th century, ____38____ kinds of great machines were made by people. Among them were the camera, the __39___ light and the radio. The first part of the 20th century saw more great changes. With the development of society and technology, people now expect to explore more about____40_____. Someday in the future, people will be allowed to do things we’ve never dreamed of.
Part II Written Test (110 marks)