From Paragraph 5,we can learn about home-built energy projec

From Paragraph 5,we can learn about home-built energy projects that________.

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阅读下列短文,回答{TST}题:The author writes the passage to introduce _

阅读下列短文,回答{TST}题:The author writes the passage to introduce ________.

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What can be the best title of the passage?(  )

What can be the best title of the passage?(  )

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"Additional stretch" in Paragraph 4 probably refers to______

"Additional stretch" in Paragraph 4 probably refers to__________.(  )

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