《2025年多维互动提优课堂九年级英语上册译林版提升版》

C
Each of us has a time of the day when we're at our best. For some,it's the morning and for others,the afternoon or the evening. Scientists call these times our circadian clock(生物钟).
Now,a new study suggests that the relationship between students' circadian clocks and their study schedules can have a big effect on their grades.
The research is the work of two scientists,Aaron Schirmer of Chicago's Northeastern Illinois University and Benjamin Smart from the University of California. The pair used data from a university computer system to study the rhythms and activities of 15,000 students at Northeastern Illinois University between 2018 and 2020.
They studied the data to see if there was a connection between the students' schedules,their natural circadian clocks and their school performance.
The study found that the closer a student's schedule and their circadian clock were,the better their grades were. But if students' clocks were out of sync(不一致) with the rest of their lives,their performance was likely to suffer.
According to Schirmer and Smart,those students who suffered from a mismatch underwent a kind of “social jet lag(时差)”. For example,students who performed best at night and were tired from late-night studying didn't get the most out of the class. They might then go on to get a lower grade for exams and coursework.
All students in the study suffered some degree of social jet lag,but late-night studies suffered the most.
The authors say mismatches between a student's schedule and circadian clock can have a “detrimental effect” and not just in terms of academic performance. Social jet lag can also be bad for students' health.
The scientists don't say that their study proves anything,but they do say that it provides help for school administrators(管理者),who might like to think about special ways to help students who get stress or pain because of their schedules.
And according to the two scientists,the findings could also help everyone to “be aware,and hopefully take advantage,of their own biological rhythms to lead a healthy life”.
(D)7. What did the new study find?
A. Most students' schedules don't match their circadian clocks.
B. Students who study in the evening have their lowest grades.
C. Students' circadian clocks have little influence on their grades.
D. Studying according to one's circadian clocks improves one's grades.
(B)8. What's Paragraph 5 mainly about?
A. The importance of study. B. An explanation of the study's result.
C. Some ways to improve the study. D. Some possible problems with the study.
(B)9. What does the underlined word “detrimental” in Para.7 probably mean?
A. Good. B. Harmful. C. Huge. D. Lasting.
(C)10. How could the study's findings be considered helpful?
A. They provide support for later school starting times.
B. They could help students improve their grades in a short time.
C. They could help school administrators improve their schedules.
D. They teach students how to change their biological rhythms.

答案： 【解析】：
这是一道英语阅读理解题，主要考查学生对于文章内容的理解和分析能力，以及词汇的掌握。题目包括了细节理解题和主旨大意题。对于细节理解题，需要从文章中找到相关信息来解答；对于主旨大意题，需要理解段落的主要内容来选出正确的选项。同时，也需要注意文章中的关键词和上下文来推测词义。
【答案】：
7. D
原文中提到“The study found that the closer a student's schedule and their circadian clock were, the better their grades were.”，意思是研究发现学生的日程安排和生物钟越接近，他们的成绩就越好。因此，选项D“按照自己的生物钟学习可以提高成绩”是正确的。
8. B
第五段主要解释了研究结果，即学生的日程安排和生物钟的不匹配会导致成绩下降，这种不匹配被称之为“社会时差”。因此，选项B“对研究结果的解释”是正确的。
9. B
在第七段中提到，“作者说学生日程和生物钟之间的不匹配可能会产生‘detrimental effect’，不仅仅是在学业表现方面。”根据上下文可以推测，“detrimental”的意思是“有害的”，与选项B“Harmful”相符。
10. C
文章最后一段提到，这些发现可以帮助学校管理者考虑特殊的方法来帮助那些因为日程安排而感到压力或痛苦的学生。因此，选项C“它们可以帮助学校管理者改善日程安排”是正确的。