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Policy makers have considered putting computer chips in cars that would allow tax collectors to charge people based on how often they drive during rush hours. These policy makers are dealing with the fact that public roads are
Previewing
The process of examining or reviewing something before it is seen, used, or fully engaged with, such as reading a book's summary before reading the book itself.
Main Ideas
The primary or central concepts, points, or assertions in a piece of writing, speech, or argument.
Sections
Divisions or parts into which something is split or categorized.
Central Idea
The core element or main theme of a text or discourse that unifies its components.
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