单词：single study
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Parents May Be Happier Than Childless Couples有孩子的夫妻家庭更幸福 Dear A Moment of Science, 亲爱的《科学一刻》栏目组， Im a parent of two young kids. Its challenging, but overall a very rewarding experience. Yet I keep heari
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By David McAlary Washington 10 January 2007 One of the main weapons to prevent mother-to-child transmission of the AIDS virus during birth is the drug nevirapine. But when nevirapine is used alone just once, HIV starts becoming resistant to it. Rese
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BEIJING, July 26 (Xinhuanet) -- Hong Kong scientists announced that they had determined the idea of time travel is impossible by proving nothing can travel faster than the speed of light. The finding is contained in a study done by a research team fr
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BEIJING, August 1 (Xinhuanet) -- U.S. researchers have discovered a genetic mutation unique to African Americans that links to heighten their asthma risk, according to reports published on Sunday in the journal Nature Genetics. Researchers of Univers
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在人们的印象中，男人在钱财方面总是比女人大方豪迈，而近期美国印第安那大学的一项研究却表明，在慈善事业上，女人可一点儿也不比男人差，甚至大方很多，到底是什么原因呢？我们来
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24.我从未遇到过像他这样英语如此流利、准确的年轻学生。 Never had I met a young student speaking English so fluently and accurately. 25.他对整个英国文学的透析以及他对文学中人物分析的切入角度激起了我
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