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【题目】关于金属在自然界中存在形式的说法中正确的是(双选)(

A.金、银可在自然界中以单质形式存在,是因为它们的活动性很弱

B.在自然界中很难找到以单质形式存在的金属,是因为金属资源太少

C.在自然界中存在最多的单质是铁

D.金属矿物广泛存在于地壳和海洋中

【答案】AD

【解析】地球上的金属资源广泛存在于地壳和海洋中,少数很不活泼的金属如金、银等以单质形式存在.

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