表现出随着年级的增加，诚信度降低的趋势。
It same that the honesty of university students decreasing by grade increase.
有关研究表明：学困生的学生人数随着年级升高而增加。
The study showed that:the number of students with learning difficulties will increase with grade level.
有关研究表明：学困生的学生人数随着年级升高而增加。
The study showed that:the number of students with learning difficulties will increase with grade level.
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