雅思听力中常见的国籍总结

Meat was main dish for early humans

FTC takes on computer scareware scammers

Obama appeals to public about 'fiscal cliff'

Effort underway to boost US voter participation(视频)

Palestinians cheer UN General Assembly vote

Maryland man is real hero behind 'Argo'

Musical legend Chuck Berry still reeling and rocking on stage at 86

Research grows through citizen science

Words and their stories: baseball terms

America's break with Britain divides families and friends

'Haunted Houses' attract big crowds on Halloween

How overfishing threatens Asia's wild fish stocks

Nobel Prize in economics recognizes 'market designers'

Polio victim searches for love in 'The Sessions'

Maryland shop cooks up chocolate vote

United Nations report urges

Serving farm-fresh meals at the farm

Interfaith worshipers celebrate sea, surf

Slow progress on curbing deforestation expected at climate conference

Consumer spending will decline unless Congress averts fiscal cliff

Seattle, 'City of Clocks' keeps on ticking

Some illegal immigrants allowed to stay under Obama order

West Nile surge keeps exterminator busy

Music classes in childhood may lead to changes in the brain

Words and their stories: Fall guy

American history: A new world clash of cultures

Student street clinic helps homeless(视频)

Cheating scandal threatens Harvard's image

Arrests in the shooting of a Pakistani schoolgirl

Number of Chinese students in US dramatically expands