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【单选题】
阅读材料，回答问题： 材料Ⅰ、氯元素（Cl）是一种重要的非金属元素，氯气（Cl 2 ）是双原子分子，在通常情况下为黄绿色有毒气体 材料Ⅱ、Cl 2 化学性质很活泼，具有较强的氧化性，能与多种非金属直接化合．氢气和氯气的混合气点燃或强光照射时发生爆炸 材料Ⅲ、Cl 2 可用于制备多种消毒剂，含氯元素的消毒剂有ClO 2 、NaClO、Ca（ClO） 2 等． （1）实验室里闻氯气的正确操作是______． （2）氢气和氯气生成氯化氢气体的反应从能量变化（“吸热反应”或“放热反应”）和基本反应类型角度分类，分别属于______、______． （3）下列说法错误的是______（选填字母序号）．
A.
燃烧一定包含着化学变化；
B.
燃烧不一定要有氧气参加；
C.
物质与氧气发生的反应都属于氧化反应；
D.
爆炸一定是可燃物与氧气发生的发光、放热的剧烈的氧化反应．
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