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A.radio | B.camera | C.jet planes | D.movies |
A.The wheel was the first great invention that is still very important today. For hundredsof years after that there were many other inventions having as much effect as the wheel. |
B.America, Russia, Japan and China began to explore the stars before1969. |
C.In the early 1800’s people began to work instead of exploring more unknown land to make life better. |
D.New invention will change our life greatly in the future. |
A.a good way | B.a new invention | C.a strong wish | D.a wonderful idea |
A.at the beginning of the 1800’s | B.in the 1960’s |
C.since the 1900’s | D.from the 1800’s to the 1960’s |