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Nonfiction Reading Test Metal Detectors - Ereading Worksheets

2. Which best describes the main idea of the second paragraph? a. It describes the sounds of a metal detector. b. It explains how metal detectors work. c. It warns about the effects of metal detectors. d. It explains how magnetic waves move. 3. How do metal detectors make clothing safer? a. Metal detectors make sure factory machines are working ...