单词：modified pedigree method of selection
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影片对白 Betty Warren: All her life she had wanted to teach at Wellesley College. So when a position opened in the Art History department, she pursued it single-mindedly until she was hired. It was whispered that Katherine Watson, a first year teach
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1. Democratic presidential candidate Barack Obama says security in Iraq is improving. Now it's time to talk about the country's other needs. Obama was speaking in Jordan during his highly-publicized trip abroad. He says there is military progress in
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Jen: Hello and welcome to 6 Minute English from BBC Learning English. I'm Jen and with me today is Neil. Neil: Hello there. Jen: Todays story is all about allergies. If you have an allergy to something, your body reacts to it in a negative way. Do yo
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拓扑排序 topological sort 偏序 partical order 拓扑有序 topological order AOV网 activity on vertex network AOE网 activity on edge network 关键路径 critical path 匹配 matching 最大匹配
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WASHINGTON, April 16 (Xinhua) -- With Monday's choice of U.S.-nominated Jim Yong Kim to head the World Bank, the global lending institution continued its longstanding -- and controversial -- tradition of keeping an American at the helm. Nominated las
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