试题与答案

地壳中含有大量的化学元素,化学元素形成了矿物,矿物组成了岩石。在地壳中已经发现的90

题型:单项选择题

题目:

地壳中含有大量的化学元素,化学元素形成了矿物,矿物组成了岩石。在地壳中已经发现的90多种化学元素中,含量居前两位的元素是()

A.氧、硅

B.桂、锦

C.招、钠

D.铁、镁

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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