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  3. Which of the following best states the main idea of the passage? Scorpions injected with prostaglandins move to hot areas to __

Which of the following best states the main idea of the passage? Scorpions injected with prostaglandins move to hot areas to __

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问题 Which of the following best states the main idea of the passage?
Scorpions injected with prostaglandins move to hot areas to ______.
选项 A、engage in greater activity
B、seek out a more-iron environment
C、demonstrate that they are ill
D、develop a fever and fight bacterial infections
答案D
解析 本题是道细节分析题。文章第三段开头就说明了:...moderate fevers have their benefits，which might explain why the fever process is so widespread.(适度的升温有利，这也许解释了为什么升温过程应用如此广泛。)这解释了为什么被注入前列腺素的蝎子向炎热地区运动。A和C两项在文章中无法找到依据，而B项与文章内容相抵触，因此D项为正确答案。
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大学英语六级

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