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Each time you take this quiz, you'll be given 20 questions randomly selected from the 70 or so I've written. Each blank should be filled in with ONE WORD. On a few questions, there is more than one possible correct answer. In addition to testing your knowledge of content, this quiz also (as a side-effect of the fill-in format) tests your spelling, but capitalization doesn't count. Click the blue "Start" button to begin.