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A look back at Hillary Clinton years as America's top diplomat

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Focus turns to immigration reform(视频)

如何独自生活能使你更强大

Classical sounds invade country music capital

Let it snow, let it snow, let it snow!

Is investing in Africa a good bet?

Words and their stories: food expressions, part II

New technology used to track US flu outbreak(视频)

Up to half of world food production is wasted(视频)

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Getting a firm grip on weed control

BlackBerry unveils two new smartphones

What online teens consider 'research'

10个对老年人有用的应用程序

High-tech images show how viruses infect cells

Two films, directors are top Oscar contenders

A new way to shop: The fashion truck

Muslims and Jews share life stories and build friendships in LA

Words and their stories: food expressions

Debating the part of slaves under a new constitution

成语故事之望梅止渴

玩游戏的学生在校表现更好？

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Britain could be on oath to EU exit(视频)

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40 years Later, US abortion opinions remain passionate