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Não esqueça: é PROIBIDO usar lápis no Enem! (mediaphotos/iStock)
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GLASGOW, UNITED KINGDOM - FEBRUARY 05: Pupils at Williamwood High School attend a math class on February 5, 2010 in Glasgow, Scotland. As the UK gears up for one of the most hotly contested general elections in recent history it is expected that that the economy, immigration, the NHS and education are likely to form the basis of many of the debates. (Photo by Jeff J Mitchell/Getty Images)
