问题
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According to the professor, what is the main reason for the popularity of home automation
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What does the professor say about the Trail of Tears?A.It was the U.S. government"s way of
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According to the professor, what is the primary advantage of spectroscopy over other labor
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What does the professor mainly discuss?A.The development of the modern skyscraper.B.The sk
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According to the professor, what led scientists to characterize the Nightcap Oak as primit
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According to the professor, what are two factors that prevent the Nightcap Oak population