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儿童时期血铅超标令半数美国人智商下降,这场铅污染的影响跨越了 ...
但是,含铅汽油带来的恶果并没有就此终结,它给一代甚至几代人留下了持久的印记。这项来自 PNAS的研究显示,目前 1.7 亿美国人幼儿时期血液中的铅含量超过警戒数值。根据估算,铅导致的认知损害令美国人均智商下降了 2.6 分。
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