VOA慢速英语2014.04.01
[audio]http://sound.yywz123.com/tingbbs/voa/voa20140401.mp3[/audio]A substance often found in soft drinks is caffeine, which helps to make people feel energized.软饮料中经常发现的一种物质是咖啡因,它能使人感觉精力充沛.
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**** Hidden Message ***** doctor sl suggest that coffeine could be causing
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