In the 1st study, students who stay up late______. According to Dr. Pagel, the academic performance of a student will be affect

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问题 In the 1st study, students who stay up late______.
According to Dr. Pagel, the academic performance of a student will be affected______.

选项 A、if he or she is not motivated.
B、if he or she is troubled by disordered sleep.
C、if he or she is a morning type.
D、if he or she is a lazy person.

答案B

解析 短文的最后一段说。Dr. Pagel认为,有睡眠障碍的学生其学业成绩是会受到影响的。
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