读下图，完成17-18题。 17.组成该山体岩石的矿物直接来自 A．地表 �

读下图，完成17-18题。

17.组成该山体岩石的矿物直接来自

A．地表 B.地壳上部 C.地壳下部 D.地幔

18.在岩石圈物质循环过程中，该山体岩石在地球表层可转化成

A．喷出岩 B.侵入岩 C．沉积岩 D.变质岩

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读下图，完成17-18题。 17.组成该山体岩石的矿物直接来自 A．地表 �

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