大众英语80篇背诵阅读带翻译(二十八) "55 Creating Colors There are two ways to create colors in a photograph. One method, called additive, starts with three basic colors and adds them together t... /
2010-06-08 / 查看
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年夜学英语四级白话:电话购物的连锁反响反应 First One: I’m from BEC company. Americans often use rhythmic knocks when they arrive at a friend’s door. Many people can tell who is waiting at the ... /
2010-06-08 / 查看
2 次
大众英语80篇背诵阅读带翻译(二十三) "46 Vision Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more impor... /
2010-06-08 / 查看
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