A industrially polluted soils B rock and soil chemistry C naturally polluted soils D the pathways of metals into the food chain

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问题 A industrially polluted soils
B rock and soil chemistry
C naturally polluted soils
D the pathways of metals into the food chain
E the element of iodine
F the persistence of heavy metals
Some diseases is connected with deficiency of______.

选项

答案E

解析 第一段最后一句“A lack of iodine in the human diet leads to some serious disease.”是选择E的依据。
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