灾前准备培训(2)
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戏剧的起源
戏剧的起源The Beginning of Drama There are many theories about the beginning of drama in ancient Greece. The one most widely accepted today is based on the ass...
郊区的发展
郊区发展Suburbanization If by "suburb" is meant an urban margin that grows more rapidly than its already developed interior, the process of suburbanization began during the emergence of th...
哥本哈根会议旨在达成气候变化协议(2)
各国纷纷寻求应对气候变化的举措。 Hints: University of East Anglia Ban Ki-Moon China is now the leading producer of greenhouse gases. But the United States and other industrialized nations were t...
美科学家发现猛犸象化石 (2)
Harris; ZedHarris is chief curator at the Page Museum, which houses treasures from the tar pits. He says only partial remains of mammoths were found at this site before, and Zed is thelargest eve...