题目内容：
How many hours of operation are there every day?__________________.
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答案解析：
填空题：How many hours of operation are there every day?____________
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We learn from the passage that about two-thirds of the cours
We learn from the passage that about two-thirds of the courses are taught throug
根据材料，请在（7）处填上最佳答案。
根据材料，请在（7）处填上最佳答案。
It is the feathers that (able) __________ a bird to fly.
It is the feathers that (able) __________ a bird to fly.
Which of the following cities is NOT located in the Northeas
Which of the following cities is NOT located in the Northeast U．S．?A．Husto B．Bos
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