题目内容
阴阳学说的核心内容包括（）。
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在自然界，秋季到冬季气温由凉爽转入寒冷，呈现阴气主下降的趋势。（）
2D scanners were much cheaper than 1D scanners when were introduced.
1D scanning technology should be replaced by 2D barcode technology.
A 2D symbol that is printed on the driver’s licence contains the information about the licence holders, such as the name and address.
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