下面进行GMAT考试重点试题整理，希望考生充分利用文中所列内容，提高备考效率。
Q11:
Which of the following most accurately describes the organization of the passage?
A. Two divergent views of a scientific phenomenon are reconciled.
B. A phenomenon is described and its scientific significance is discussed.
C. The discovery of a scientific phenomenon is traced and its implications for further research are suggested.
D. A long-standing scientific theory is examined and recently discovered evidence is shown to support it.
E. The ways in which a particular geological phenomenon is exceptional are detailed and classified.
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Q12:
Information in the passage suggests which of the following concerning the Earth's mantle 2.5 to 4 billion years ago?
A. It contained magmas that were more significantly affected by the decomposition of minerals than are current-day magmas.
B. It contained a lower proportion of water that it contains today.
C. Its characteristics were accurately described by both Bowen and Hess.
D. Its temperature was sufficiently high to produce magmas with high magnesium content.
E. Its total magnesium content then was roughly equivalent to its magnesium content today.
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Q13:
Which of the following most accurately states the main point of the passage?
A. Komatiites provide information about rates of volcanic eruption between 2.5 and 4 billion years ago.
B. Komatiites provide information about how the physical properties of lava in the Earth's past compare with those of current-day lava.
C. Komatiites provide evidence that undermines Bowen's experimental conclusions regarding the temperatures at which lava exists as a liquid.
D. Komatiites provide evidence that has changed geologists' ideas about the characteristics of the Earth's mantle between 2.5 and 4 billion years ago.
E. Komatiites provide evidence that water in the Earth's mantle may have reduced the temperature required for lava to exist as a liquid.
以上是对GMAT考试重点试题整理的介绍，希望对考生有所启发，能够加快备考进度，取得GMAT高分。
