四级写作的常用句式：主语从句结构

The State of Vermont: fertile farmland, green mountains

A declaration seeking life, liberty and the pursuit of happiness

到别人家做客的十大禁忌

Words and their stories: state nicknames, part 2

Global warming might threaten water supply

Breathe Carolina re-releases

Thanksgiving, but US turkey farmers aren't celebrating

President Obama wins second term

On the bubble?

Number of international students attending American colleges and universities continues rising

Remote US museum survives in Hells Canyon

Psychologist tells inspiring story of his giant uncle

Experts not hopeful about Doha climate conference(视频)

US 'patriotic millionaires': 'tax us more'

Words and their stories: top brass

Power still out for many in New York city

Holiday season features latest, hottest electronic gadgets

Scandals highlight ethics lapses in military(视频)

'Gangnam Style' boosts S.Korean tourism

Gold seekers once rushed to Canada’s northwest

UN chief warns of perils ahead of climate change conference

Could waste plastic reduce our need for oil?

American history: The shot heard around the world

Efforts mount to conserve wild turkey breeds

Defense Department investigates top American Commander in Afghanistan

New 007 movie reveals Bond's inner demo

World Prematurity Day aims to lower rates of premature births

Blake Shelton wins big at CMA Awards

How an allowance helps children learn about money

Obama, House Speaker take positions on budget before negotiations