A. industrially polluted soils B. once they entered the food chain. C. naturally polluted soils D. the geology and geochemistry

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问题 A. industrially polluted soils
B. once they entered the food chain.
C. naturally polluted soils
D. the geology and geochemistry of the environments
E. the element of iodine
F. not found so far
Some serious diseases is connected with deficiency of______.

选项

答案E

解析 本句应定位在第一段中“A lack of iodine in the human diet leads to some serious dis—eases.”由此,可以找出答案。
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