Which of the following most accurately states the main point of the passage?
Komatiites provide information about rates of volcanic eruption between 2.5 and 4 billion years ago
Komatiites provide information about how the physical properties of lava in the Earth's past compare with those of current-day lava.
Komatiites provide evidence that undermines Bowen's experimental conclusions regarding the temperatures at which lava exists as a liquid.
Komatiites provide evidence that has changed geologists' ideas about the characteristics of the Earth's mantle between 2.5 and 4 billion years ago.
Komatiites provide evidence that water in the Earth's mantle may have reduced the temperature required for lava to exist as a liquid.
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正确答案是 D。Komatiites 提供了证据,改变了地质学家关于 2.5 到 4 亿年前地球的地幔特性的想法。该文章描述了 Komatiites 最初是如何发现的,以及之前的地质学理论如何与其相抵触,以及在 1960 年之前,一般认为高镁岩石不存在。因此,Komatiites 的发现改变了对地球地幔特性的想法,因此选择 D 作为最准确的主旨是正确的。
答案来自最后一句话,C项说反了,应是support不是undermine