15．Dear Mr．/Ms，
I would like to suggest that the starting time be changed at our school．Classes at Sebastian Valley Middle School simply start too early in the morning．Getting eight to nine hours of sleep each night is almost impossible when classes begin at 7：30am．In order to shower，dress，get organized，eat a quick breakfast，and meet the school bus by 6：45，I would have to get up at 5：45．
Early in the morning，students are too sleepy to learn well．Without enough sleep，young people cannot think clearly or enjoy learning．According to a report called"Are Students getting Enough Sleep？"From Sebastian Valley Times，"Sleepiness disturbs concentration，reduces short-term memory，and causes bad feelings．"
Researchers have learned that teens normally fall asleep and wake up later than adults．Teens who stay up late at night have trouble getting up early in the morning．Studies show that some schools have already adjusted school hours to better match the teen sleep cycle（周期），as a result，students in these school are learning better on the new schedule（时间表）．
Some of my classmates argue that starting school an hour later will prevent them from taking part in after-school athletic programs．A solution would be to carry out these programs before school instead of after school．The students who are involved in sports and clubs would continue to arrive at the usual time．The rest of the student body could get a little more sleep and arrive an hour later．
Teens usually have a later sleep cycle，and learn and behave better when rested．So I would like to suggest that we have a meeting to discuss the problem and listen to all the students'voice．
Thank you for considering this request（请求）!
61．In Tom's opinion，classes should begin atD．
A.6：45 B.7；30 C.8：00 D.8：30
62．A report from Sebastian Valley Times was mentioned in Paragraph 2to showB．
A．the popularity of Tom's school
B．the disadvantages of lacking sleep
C．the importance of athletic programs
D．the characteristics of the teen sleep cycle
63．As for athletic programs，Tom thinks thatD．
A．they are very difficult
B．they are a waste of time
C．they make most students sleepy
D．they may start early in the morning
64．Which of the following does Tom probably agree with？A
A．Sleep is food for the brain．
B．Books should be few but good．
C．Challenge is needed for success．
D．Early to bed makes a man healthy．
65．Tom wrote the letter mainly toA．
A．put forward a suggestion
B．send his congratulation
C．make an apology
D．express thanks．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了汤姆写了一封信要求学校改变学生的作息时间，让他们更好的学习．
解答 61．D．推理判断题．根据第四段Some of my classmates argue that starting school an hour later will prevent them from taking part in after-school athletic programs可知按照汤姆的观点，上课应该.8：30开始；故选D．
62．B．细节理解题．根据第二段Early in the morning，students are too sleepy to learn well．Without enough sleep，young people cannot think clearly or enjoy learning可知学校的缺点是学生们缺乏睡眠；故选B．
63．D．推理判断题．根据第四段The students who are involved in sports and clubs would continue to arrive at the usual time可知参加体育的学生他们会在清晨开始；故选D．
64．A．推理判断题．根据倒数第二段Teens usually have a later sleep cycle，and learn and behave better when rested可知睡眠是大脑的食物，对人体很重要；故选A．
65．A．主旨大意题．根据第一段I would like to suggest that the starting time be changed at our school可知汤姆写这封信主要是为了提出建议；故选A．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
