Not having worked out the problem,____________leave the offi

Not having worked out the problem,____________leave the office.

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阅读下面的文字,完成题。下列说法中,不符合文意的两项是()

阅读下面的文字,完成题。下列说法中,不符合文意的两项是()

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What is the author's attitude towards the future of solar en

What is the author's attitude towards the future of solar energy systems?

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What do the authors think of living a sustainable life?(  )

What do the authors think of living a sustainable life?(  )

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Which of the following shows the process of the impact of at

Which of the following shows the process of the impact of atmospheric CO2 'on se

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