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Long holidays are a great time for kids to stay up late and sleep in. However, it’s important not to stray too far from their regular bedtime routine. A few late nights won’t hurt, but if they become the norm, it can be hard to get back on track when school starts.

Sleep science research supports the need for consistent (一致的) bed and wake times throughout the week and weekend. This is not just because it makes sure that young people get enough sleep; more importantly, it helps keep our body clock regular. This is best for our quality of sleep and general health.

If bedtimes and wake times are very different between school weeks and weekends, it can affect mood, health, social activities, and school performance. Allowing kids to stay up late during holidays can cause them to go to bed later each night, which might mess up their body clock.

To fix this, gradually move their wake-up times earlier before school starts. It’s best to keep their body clock stable during the holidays by sticking to a regular schedule. This way, they’ll be ready for school without needing professional help.

1.1.What does the underlined word “stray” probably mean?

A Allow.

B Move.

C Stand.

D Save.

解析：选B。B 词义猜测题。根据后文的“A few late nights won’t hurt, but if they become the norm, it can be hard to get back on track when school starts.”可知，假期偶尔熬夜无妨，但如果熬夜成为常态，开学后就很难回到正轨了。由此可推知，作者建议长假期间不要太偏离日常作息。故选B。

2.2.How does the writer support his/her idea in the passage?

A By listing numbers.

B By giving examples.

C By using research results.

D By asking questions.

解析：选C。C 推理判断题。根据第二段中的“Sleep science research supports the need ...”可知，作者通过引用科学研究的结果来证明自己的观点。故选C。

3.3.What might irregular sleep routine result in? ①Good mood. ②Bad health. ③Less social activity. ④Poor study performance.

A ①②③

B ①③④

C ①②④

D ②③④

解析：选D。D 细节理解题。根据第三段中的“If bedtimes and wake times are very different between school weeks and weekends, it can affect mood, health, social activities, and school performance.”可知，不规律作息可能会导致情绪变坏、健康状况变差，社交变少以及学习表现变差。故选D。

4.4.What’s the best advice for a better school sleep?

A Prepare a few days earlier.

B Never change a regular routine.

C Turn to others for help.

D Do whatever you want.

解析：选B。B 细节理解题。根据最后一段中的“It’s best to keep their body clock stable during the holidays by sticking to a regular schedule.”可知，最好的做法是在假期里保持生物钟，坚持跟上学期间一样的规律作息。故选B。

5.5.Why does the writer write the passage?

A To advise parents to help kids sleep early.

B To share a new way to spend holidays with kids.

C To tell the importance of regular bedtime routine.

D To introduce the benefits of early bed and early rise.

解析：选C。C 推理判断题。根据全文内容可知，本文是一篇议论文，作者提出了一个观点：长假期间也要坚持规律作息，这对于孩子来说是非常重要的。故选C。