- United States Department of State
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America's most inspiring politician pays tribute to men and woman who have exhibited composure,...Added August 29, 2018 - This item has been added.
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Learn how scientists study some of the most extreme weather on Earth.
Most days, you probably...Added August 24, 2018 - This item has been added.
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Rocks - and the glittering minerals they're made of - are everywhere: the walls of your room, the...Added August 24, 2018 - This item has been added.
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Shape up your English with thousands of idioms
Whether you are a learner of English who is...Added August 14, 2018 - This item has been added.
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Business writing has been transformed in our era from long, leisurely letters to fast faxes,...Added August 14, 2018