1、任务型阅读专练 ANaturally regulate your sleep-wake cycle Melatonin（褪黑激素）is a naturally occurring hormone（激素）that helps regulate your sleep-wake cycleMelatonin production is controlled by light exposureYour brain should produce more in the evening, when its dark, to make you sleepy, and less during the day
2、when its light and you want to stay awakeHowever, many aspects of modern life can disturb your bodys natural production of melatonin and your sleep-wake cycle Spending long days in an office away from natural light, for example, can impact your daytime wakefulness and make your brain sleepyThen brig
3、ht lights at nightespecially from hours spent in front of the TV or computer screencan hold back your bodys production of melatonin and make it harder to sleep, However, there are ways for you to naturally regulate your sleep-wake cycle, improve your bodys production of melatonin, and keep your brai
4、n on ahealthy schedule Increase light exposure during the day Remove your sunglasses in the morning and let light onto your face Spend more time outside during daylightTry to take your work breaks outside in sun light, exercise outside, or walk your dog during the day instead of at night Let as much
5、 light into your home/workspace as possibleKeep curtains and blinds open during the day, move your desk closer to the windowIf necessary, use a light treatment boxA light treatment box can create sunshine and can be especially useful during short winter days when theres limited daylightImprove melat
6、onin production at nightTurn off your television and computerMany people use the television to fall asleep or relax at the end of the dayNot only does the light hold back melatonin production, but television can actually excite the mind, rather than relaxing itTry listening to music or audio books,
7、or practicing relaxation exercisesIf your favorite TV show is on late at night, record it for viewing earlier in the dayDont read from a backlit device at night （such as an iPad）If you use a portable electronic device to read, use an eReader that is not backlit, ieone that requires an additional lig
8、ht source such as a bedside lamp.Change your light bulbsAvoid bright lights before bed, use low-wattage bulbs insteadWhen its time to sleep, make sure the room is darkThe darker it is, the better youll sleep Cover electrical displays, use heavy curtains or shades to block light from windows, or try
9、an eye mask to cover your eyes Use a flashlight to go to the bathroom at nightAs long as its safe to do so, keep the light to a minimum so it will be easier to go back to sleepTitle : Naturally regulate your sleep-wake cyclePassage outlineSupporting detailsDeciding factorMelatonin, a hormone that （6
10、6）_ naturally, helps regulate your sleep-wake cycle（67）_ melatonin in the evening makes you sleepy, while less melatonin during the day makes you （68）_ Disturbing（69）_ Long days in an office away from （70）_ light Long hours in front of the TV or computer screen （71）_ toincreasing lightexposure （72）_
11、off your sunglasses in the morning Spend more time outside during daylight Keep curtains open and sit close to the windowUse a light treatment box especially in (73) Methods of improving melatonin production Listen to music （74）_of watching TV Avoid （75）_from a backlit device Use low-wattage bulbs U
12、se heavy curtains to make the room dark Use a flashlight to go to the bathroom BDo we need an “Ivy League”?The news of this Chinese “Ivy League” has received mixed responses from the public and press. Some negative critics have dismissed it as yet another example of the wishful copying of internatio
13、nal practices without fully understanding them. Others say that the “Ivy League” is not necessary but that the union is a good idea, one that could promote academic development.So whats your opinion on a Chinese “Ivy League”? Do we need one?Yes. Ivy League or not, nine of Chinas best universities co
14、operating is a good thing.These universities combining resources could create a better environment for students and for research. It could also save a lot of time and resources because it would mean fewer unnecessary investments for some of the universities.Allowing students to move to or have excha
15、nges with other universities could broaden their horizons, improve their social skills and create more employment opportunities. The results could be more important than lessons and achievements.The term “Ivy League” carries a sense of academic excellence, tradition and reputation. If borrowing such
16、 a term could encourage students and professors mental state and improve Chinese higher education, then theres no reason not to do it.No. Universities should do some work on increasing cooperation instead of copying an “Ivy League” model.Many Chinese universities already have such cooperation with e
17、ach other. If this cooperation were associated with the “Ivy League”, it would just distract (分散) attention and resources and have a negative effect.These Chinese universities are all state-run and most get their funding from the government. Theyre quite similar to each other in many ways and more c
18、ooperation wouldnt bring about as much potential ability as between , say, public and private, or Chinese and foreign universities.China should find its own way to develop world-class universities instead of by copying some foreign practices. We have our own unique conditions and foreign lessons oft
19、en dont apply well here.Ivy in AmericaOriginally referred to an athletic conference of eight famous universities in the 71 _ of AmericaIvyinChinaMember universitiesNine famous universitiesPurposes of the unionTo exchange students* To 72 _ the academic achievements* To work on joint programs73_ from
20、the publicPositive side1. The cooperation is good for the combination of resources and 75 _ of a better environment.2. Students will have 76_ difficulty finding jobs through the student-exchange program.3. The cooperation will encourage students and professors 77 _ .74 _ side1. 78_ will be drawn away and resources will be divided.2. The cooperation wont have great effects because of the 79 _ between state-run universities in many ways.3. China should develop world-class universities in its unique way without 80 _ foreign practices blindly.