The bed should be reserved as a place for sleep，but people tend to read an iPad a lot in bed before they go to sleep.
Charles Czeisler，a professor at Harvard Medical School，and his colleagues got a small group of people for an experiment.For five days in a row，the people read either a paper book or an iPad for four hours before sleep.Their sleep patterns were monitored all night.Before and after each trial period，the people took hourly blood tests to paint a day-long picture of just how much melatonin（褪黑激素）was in their blood at any given time.
When subjects read on the iPad as compared to the paper books，they reported feeling less sleepy at night and less active the following morning.People also took longer to fall asleep on the iPad nights，and the blood tests showed that their melatonin secretion（分泌）was delayed by an hour and a half.
The researchers conclude in today's journal article that gives the rise of e-readers and the increasingly widespread use of e-things among children and adolescents，more research into the "long-term consequences of these devices on health and safety is urgently needed." Czeisler and colleagues go on，in the research paper，to note "Reading an iPad in bed may increase cancer risk."
However，software has been developed that can reduce some of the blue light from the screens of phones and computers according to time of day，and there are also glasses that are made to filter（過濾）short wavelengths.While they seem like a logical solution for the nighttime tech users，it needs more research.
（1）In Charles Czeisler's experiment，all the subjects were asked to BB.
A．sit in a row and receive the strict tests
B．have their sleep patterns observed all night
C．read a paper book and an iPad at the same time
D．have their blood tested per hour during the trial
（2）The third paragraph tells us the iPad readers were likely to DD.
A．feel less sleepy and tired in the day
B．fall asleep more easily after reading
C．have a lot more melatonin secretion
D．become less energetic the next morning
（3）The special software recently developed can CC.
A．remove the blue light from your devices completely
B．help prevent eyes being harmed by short wavelength
C．weaken the harm done by doing nighttime e-reading
D．be used in all the e-things widely and safely
（4）What's this passage mainly about？ AA
A．No e-reading in bed before sleep
B．New software for night e-readers
C．Wrong behaviors before bedtime
D．No games on iPad in bed
【考點】社會．
【答案】B；D；C；A
【解答】
【點評】
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發(fā)布：2024/5/27 14:0:0組卷：3引用：3難度：0.6
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2．Hi Judy!
You often complain to me that you always buy goods unreasonably on sale promotion（促銷）and feel it shameful after going back to your school dormitory with new things not needed，considering all the money you spend is your parents' income．
In fact，this is a common phenomenon，called impulsive buying，a buying unplanned and hard to control．It usually happens when a store offers discounts（打折）or sales promotion-a special way used by stores to get more customers，which means you may fall into its traps even without notice．
Stores，with a good knowledge of customers' psychology（心理），make use of it to drive business．Avoiding all the impulsive buying is a hard thing．However，knowing our psychology behind it and reducing the times when influenced by sales promotion may be useful．So you should keep calm when facing the sales promotion by keeping in mind what you really need．
Find out the conditions where you are likely to buy things blindly．When seeing a dress advertised at 20% off，do not concentrate on the discount，but warn yourself against falling into the trap of "saving money''．
Besides，do not forget the long-term effects of your choice when meeting a sales promotion．Short-term benefits，like excited feeling just after buying items encourage impulsive buying．But the long-term costs such as waste of money and the sense of shame really annoy you．When seeing the advertisements，remember what you really want to buy originally and warn yourself of that terrible feeling．Only in this way can you save money for really needed things．
Yours，
Rachel
（1）Judy felt it a shame to．
A．complain to others about the poverty of her family
B．waste her parents' money on unneeded things
C．buy cheap things at lower prices or with less money
D．rely on her parents for further education
（2）Which of the following is true of impulsive buying according to Rachel？
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B．It can be brought under control with the help of stores．
C．It is planned by buyers with the purpose of saving money．
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（4）How do buyers usually feel in the long run after buying discounted things？
A．Regretful．
B．Thrilled．
C．Relaxed．
D．Sceptical．發(fā)布：2025/1/10 8:0:1組卷：4引用：2難度：0.6 -
3．Ever since I graduated from high school I've worked in the factories surrounding my hometown every summer.However，making the transformation between school and full-time blue-collar work during the break never gets any easier.For a student like me who considers any class before noon to be unacceptable，getting to a factory by 6 o'clock each morning is suffering.My friends never seem to understand why I'm so relieved to be back at school or that my summer vacation has been anything but a vacation.
There are few people as self-confident as a college student who has never been out in the real world.People of my age always seem to overestimate the value of their time and knowledge.In fact，all the classes did not prepare me for my battles with the machine I ran in the plant，which would jam whenever I absent-mindedly put in a part backward or upside down.
The most stressful thing about blue-collar life is knowing your job could disappear over night.Issues like being laid off and overseas relocation had always seemed distant to me until my co-workers told me that the unit I was working in would shut down within six months and move to Mexico，where people would work for 60 cents an hour.
After working 12-hour shifts（輪班）in a factory，the other options have become only too clear. "This job pays well，but it's hell on the body，" said one co-worker. "Study hard and keep reading." she added.When I'm back at the university，skipping classes and turning in lazy re-writes seems too irresponsible after seeing what I would be doing without school.All the advice and public-service announcements about the value of an education that used to sound stale（陳腐的）now ring true.
My experiences in the factories have inspired me to make the most of my college years before I enter the real world for good.
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A．He became responsible for his work.
B．He learned to be more practical at work.
C．He began to respect blue-collar workers.
D．He came to appreciate his college education.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.5
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