6th Grade Invention Quizzes, Questions & Answers
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The invention is the moving force that leads us to modernity. Take this quiz on the great inventions of the 20th century. From the walk man to cellphones to computers and much more, the invention of the 20th century opened the...
Questions: 10 | Attempts: 282 | Last updated: Dec 14, 2023
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Sample QuestionModern lie detector was invented by
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