单词：digestive tract symptom
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1. Two days after a strong storm slammed much of the East Coast with blizzard-like conditions, many people were still digging out Monday. Many businesses were still closed due to the snowfall, and commuters in several cities had a tough time getting
美联社新闻一分钟2009年(十二)月
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闭着眼睛飘单词 四级词汇
It's Such a Gas! Natural bodily functions are a popular theme in lowbrow humor the world over, especially among adolescent boys, and none more so than farting. A fart, which is the expulsion of gas fr
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Plucking Sounds From the Past 拨弦弄乐话泰雅 Many of us have passed through Wulai to view its famous waterfall, but have you ever stopped to appreciate the unique sounds coming from the heart of this ancient aboriginal village? The Atayal trib
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If you were to lay your digestive tract out in a straight line, it would form a tube spanning nearly ten meters. 如果你将消化道拉直成一条线，它的样子就像是一条长达将近十公尺的管子。 学习重点： 1.digestive tract 消
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By Melinda Smith Washington 17 July 2007 Antibiotics are designed to fight a multitude of bacterial infections. But some infections -- such as those in the urinary tract -- have become resistant to many antibiotics. VOA's Melinda Smith reports on a r
2007年VOA标准英语（七月）