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)