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  3. When scientists are trying to understand a particular set of phenomena, they often make use of a "model." A model, in the scient

When scientists are trying to understand a particular set of phenomena, they often make use of a "model." A model, in the scient

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问题     When scientists are trying to understand a particular set of phenomena, they often make use of a "model." A model, in the scientists’ sense, is a kind of analogy or mental image of the phenomena in terms of something we are familiar with. One example is the wave model of light. We cannot see light as if it were made up of waves because experiments on light indicate that it behaves in many respects as water waves do.
    The purpose of a model is to give us a mental or visual picture -- something to hold onto -- when we cannot see what is actually happening. Models often give us a deeper understanding: the analogy to a known system (for instance, water waves in the above example) can suggest new experiments to perform and can provide ideas about what other related phenomena might occur.
Models provide us with deeper understanding because ______.
选项 A、they make us think about our universe
B、they were used to represent some other phenomena
C、they are more precise than theories
D、they indicate further direction and help us make predictions
答案D
解析 本题属理解分析题。文章最后一句已提到：model可以提供新的可展示的实验和其他可能发生的现象的提示。
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