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  3. What does the passage mainly discuss? Based on the information in the passage, what can be inferred about X-ray microscopes in

What does the passage mainly discuss? Based on the information in the passage, what can be inferred about X-ray microscopes in

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问题 What does the passage mainly discuss?
Based on the information in the passage, what can be inferred about X-ray microscopes in the future?
选项 A、They will probably replace electron microscopes altogether.
B、They will eventually he much cheaper to produce than they are now.
C、They will provide information not available from other kinds of microscopes.
D、They will eventually change the illumination range that they now use.
答案C
解析 本题考查根据已知信息进行推断的能力。由文章的最后一句话"Rather，their special properties will make possible investigations that will complement those per formed with light-and-electron based instruments"．我们得知，X射线显微镜因其特殊的性质，对光电显微镜是一个补充。其言下之意就是，x射线显微镜能提供其它种类显微镜所不能提供的信息。
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