题目内容

【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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