Environmentalists worried over increased production of autos
Unusual Mars rock surprises rover scientist
Marian Anderson: Her voice became famous around the world
High and fast: the X-15 reached the edge of space
New report outlines strategy for HIV/AIDS
Words and their stories: baseball terms
Words and their stories: Fall guy
Mobile phones could help efforts to end malaria
Maryland shop cooks up chocolate vote
Polio victim searches for love in 'The Sessions'
Number of Chinese students in US dramatically expands
Visit to a medical museum
Minnesota state fair holds big sing along
Jimmy Doolittle: a pilot and leader
Consumer spending will decline unless Congress averts fiscal cliff
Words and their stories: military expressions
Falconer uses birds to give young people hope
Palestinians cheer UN General Assembly vote
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Student street clinic helps homeless(视频)
It’s time to go back to school! Both Chinese and American阅读理解答案
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South pacific islands now totally powered by the sun
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NYC schools expand birth control availability
Slow progress on curbing deforestation expected at climate conference
Electronic dance music bounds into mainstream
The risks of language for health translators
Pirate attacks are down in 2012