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2019-05-31
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2019-05-31
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2019-05-31
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2019-05-31
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2019-05-31
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2019-05-30
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2019-05-30
读前 也要划出重点。特别是大写词（如人名，地名等），数字（包括时间中的阿拉伯数字），不认识的词汇等（对这些词我们会比较敏感，有下意识的短暂记忆），因为这些词在文中一... 详情>>
2019-05-30
阅读段落 Recent work on the problem of when people first entered the Americas is an example of the value of these new techniques. North-east Asia and Siberia have long been accepted as the launching ground for the first human colonisers... 详情>>
2019-05-30
阅读段落 The principle of float glass is unchanged since the 1950s. However, the product has changed dramatically, from a single thickness of 6.8 mm to a range from sub-millimeter to 25mm, from a ribbon frequently marred by inclusions a... 详情>>
2019-05-30
