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题目
题型:不详难度:来源:
Which of the following does paper burn in?
A.CO2B.N2C.HeD.O2

答案
D
解析
CO2 二氧化碳; N2氮气;He氦气;O2氧气。句意:纸张在下列哪种气体中燃烧?结合常识,可知选D。
核心考点
试题【Which of the following does paper burn in?A.CO2B.N2C.HeD.O2】;主要考察你对助动词等知识点的理解。[详细]
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