41 In more northern regions of the US, school is less likely to be affected by snowy weather 　　（本题出自2

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　　40 Debates on social media show some parents are opposed to ending the "snow day" tradition 　　（本题出自2024

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　　39 There is a time-honoured tradition in the US for school kids to stay at home on "snow days" 　　（本题出

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　　38 According to some research, extreme hot weather negatively affects students& 39; performance 　　（本题出自2024

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　　37 New policies adopted by many US schools require students to do online learning at home in case of a sc

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