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【单选题】
根据反应X 2 +2HY＝2HX+Y 2 ，X 2 +2HZ＝2HX+Z 2 ，Z 2 +2HY＝2HZ+Y 2 ，下列叙述中错误的是A.
物质氧化性：X 2 >Z 2 >Y 2
B.
物质的还原性：HY>HZ>HX
C.
反应Y 2 +2HX ＝ 2HY+ X 2 也能发生
D.
Z 2 可能有氧化性，也可能有还原性
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