• This new study looks in more detail at the effect of a half-hour delay on school start time by asking students to fill in questionnaires at the start and end of the three-month study.

    这项新的研究研究延后上学半个小时会产生影响研究开始三个月后研究结束时候学生们要求填写份调查问卷

    youdao

  • This new study looks in more detail at the effect of a half-hour delay on school start time by asking students to fill in questionnaires at the start and end of the three-month study.

    这项新的研究研究延后上学半个小时会产生影响研究开始三个月后研究结束时候学生们要求填写份调查问卷

    youdao

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