单词：trophoblast
单词：trophoblast 相关文章
新型结核医疗服务可显著降低死亡率 A new study shows that redesigning medical services for tuberculosis can dramatically reduce the death rate. The research was conducted in a local health district in the West African nation of Togo. 一项
VOA标准英语2015年(十二月)
Atrial fibrillation is a cardiac arrhythmia that often produces very disruptive palpitations, fatigue, and even shortness of breath. Worse, atrial fibrillation can substantially increase your risk of stroke. If you have atrial fibrillation there is l
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By Efam Dovi Accra 06 July 2006 In Ghana an estimated 12,000 of the country's 20 million people are infected with tuberculosis annually, and for many of them access to treatment has not always been easy. So the Global Fund is sponsoring a new progra
2006年VOA标准英语（七月）
Researchers are in the final steps of evaluating two new drugs to add to the existing treatment for hepatitis C. An estimated 170 million people worldwide have the liver infection known as hepatitis C. The standard, two-drug treatment is not effectiv
VOA标准英语2011年(四月)
饶舌:Tech N9NE - Check Yo Temperature 相关介绍 ：2008年9月是Tech N9NE事业的一个里程碑，他的双CD专辑《Killer》突破100万张的销售记录。2009年4月7日，Rock The Bells 2009 Festival邀请他来做演出，今年10月的
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1.结构不平行 例：I was able to raise my TOEFL score by studying hard and I read lots of books. 当使用连词将一系列的单词联接起来的时候，应当使用词性相同或同一类型的短语。 2.不知所云 例：Many companies
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