We all know that paper burns in _________ .A．CO2B．N2C． O2 D．CO
题型：不详难度：来源：
| We all know that paper burns in _________ . |
答案
| C |
解析
试题分析：根据语境可知此句的含义是我们都知道纸在氧气中燃烧。有化学知识可知选择C。
点评：此题考查了学科之间的联系。 |
举一反三
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