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  3. PASSAGE FOUR What effect does the iron from blood cells have according to the researcher’s experiment?

PASSAGE FOUR What effect does the iron from blood cells have according to the researcher’s experiment?

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问题 PASSAGE FOUR
What effect does the iron from blood cells have according to the researcher’s experiment?
选项
答案It has an effect on the preservation of animal tissues．
解析 根据题干中的experiment定位至第六段，根据该段第一句中的To test this idea可知，该段承上启下，故可知答案在第五段。根据第五段最后两句可知，血细胞中通常含有铁元素，研究人员设想，是否血细胞中的铁元素对动物软组织保存发挥着重要作用，而第六段证实了该设想，故答案为It has an effect onthe preservation of animal tissues。
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