单词：algeny(Lederberg1966)
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According to three former senior U.S. government officials, one of the central foreign policy questions facing the incoming Obama administration will be how to deal with a resurgent Russia. Most experts agree that relations between Washington and Mo
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Putting Planet First in Climate Change Talks 气候变化会议把关爱地球放在首位 At the U.N. climate change conference in Durban, South Africa, theres a call to view the issue as a moral imperative. The man whos called South Africas green b
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