问答题
17.
Teenagers who don't get enough rest have more learning, health, behavior and mood problems than students who get at least nine hour a night.
【正确答案】
相比那些每晚至少睡9个小时的孩子,休息不足的青少年在学习、健康、行为及情绪方面都有更多的问题。
【答案解析】
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