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填空题
Acid is particularly harmful to photographic materials.____
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解析：
由题干中的信息“Acid is particularly harmful to photographic materials”可以定位到E段，该部分提到酸对相纸的原料尤其不利，故匹配段落为E。
由题干中的信息“Acid is particularly harmful to photographic materials”可以定位到E段，该部分提到酸对相纸的原料尤其不利，故匹配段落为E。
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