4、Let’s do some sleep math.You lost two hours of sleep every night last week because of a big project due on Friday.On Saturday and Sunday,you slept in,getting four extra hours.On Monday morning, you were feeling so bright-eyed that you only had one cup of coffee, instead of your usual two.But don’t be cheated by your energy.You’re still carrying around a heavy load of sleepiness, or what experts call“sleep debt”――in this case something like six hours,almost a full nights’ sleep.
Sleep debt is the difference between the amount of sleep you should be getting and the amount you actually get.It’s a deficit(缺乏)that grows every time we skim some extra minutes off our nightly sleep.“People accumulate sleep debt gradually without being noticed,”says William C.Dement,founder of the Stanford University Sleep Clinic.Studies show that such short―term sleep deprivation leads to a foggy brain,worsened vision,and trouble remembering. Long-term effects include obesity,insulin(胰岛素)resistance, and heart disease. A survey by the National Sleep Foundation reports that we’re losing one hour of sleep each night――more than two full weeks of sleep every year.
The good news is that,like all debt, with some work,sleep debt can be repaid. Adding an extra hour or two of sleep a night is the way to catch up.For the long―term lack of sleep,take it easy for a few months to get back into a natural sleep pattern.
Go to bed when you are tired,and allow your body to wake you in the morning(no alarm clock allowed).You may find yourself catatonic(有紧张症的)in the beginning of the recovery cycle:expect to have ten hours shut-eye per night. As the days pass, however,the amount of sleeping time will gradually decrease.
So earn back that lost sleep――and follow the dictates of your innate(固有的)sleep needs. You’ll feel better.“When you put away sleep debt, you become a superman,”says Stanford’s Dement, talking about the improved mental and physical capabilities that come with being well rested.
51.If you have short―term sleep deprivation, .
A.you can think and remember things clearly
B.you can still see everything very clearly
C.you can drive your car easily
D.you may have a poor sight
52.The example of sleep math is used to show .
A.in what case you build up a sleep debt
B.why you need six hours’ sleep every night
C.why you are full of energy even when you don’t have enough sleep
D.you should drink coffee to keep energetic when you don’t have enough sleep
53.The author begins Paragraph 3 with .
A.an order B.a story C.a definition D.an example
54.By saying the underlined sentence in the last paragraph,Dement means .
A.a superman always needs a lot of sleep
B.you will be in a good state with enough sleep
C.you can become superman after you repay your debt
D.You will become superman if you don’t make up for sleep debt
55.What might be the most suitable title for the passage?
A.Can you catch up on lost sleep? B.How can you keep energetic?
C.Can you have a good sleep? D.What is sleep debt?
1、Kindness at fast-food restaurant
It was summer and I had gotten one of the few jobs a 14-year-old can find―working at Burger King,a fast-food restaurant.It 16 wasn’t a good job,but it meant money, 17 was something I needed.
One day,I was working behind the front counter,taking 18 .The customers were coming and going,and the woman who 19 didn’t seem any different from most others.
She ordered her meal and I told her the total. As she searched 20 her purse to find some change,the woman soon 21 that she was about a dollar short.“I’m 22 to say this, but I guess I won’t be able to make my purchase 23 ,”she said sadly
That’s when I had the idea of paying the difference for her. She refused at first,but after I 24 ,she agreed. She thanked me and moved to the end of the counter to 25 her order. I continued with my work and thought 26 more of it
About an hour later 27 had slowed down and I was waiting for my next customer. Then I glanced over towards the 28 and saw the same woman whom I’d helped with the money entering again.I 29 recognized her.
She walked straight up to me and said,“I want to thank you again for what you did. You see,I’m a diabetic(糖尿病患者),and 30 I need to eat something right away.That’s 31 I came in earlier.If you hadn’t helped me as you did,I 32 have fainted. Thank you.”
She handed me two dollars, 33 I’d given her.
34 the woman walk away, I realized that God had used me to help me. In the end, I was 35 not only with money but also with the satisfaction of knowing that I’d helped someone out of a tight spot.
16.A.firstly |
B.roughly |
C.certainly |
D.strictly |
17.A.which |
B.what |
C.that |
D.it |
18.A.menus |
B.orders |
C.service |
D.food |
19.A.reached |
B.moved |
C.presented |
D.approached |
20.A.through |
B.for |
C.about |
D.across |
21.A.recognized |
B.realized |
C.admitted |
D.said |
22.A.guilty |
B.disappointed |
C.embarrassed |
D.regret |
23.A.above all |
B.first of all |
C.in all |
D.after all |
24.A.insisted on |
B.insisted |
C.stuck to |
D.stuck |
25.A.pick up |
B.pick out |
C.carry out |
D.bring out |
26.A.none |
B.anything |
C.nothing |
D.something |
27.A.customers |
B.orders |
C.pressure |
D.business |
28.A.entrance |
B.restaurant |
C.counter |
D.window |
29.A.suddenly |
B.immediately |
C.surely |
D.completely |
30.A.at a time |
B.at time |
C.sometime |
D.sometimes |
31.A.when |
B.where |
C.why |
D.how |
32.A.shall |
B.may |
C.might |
D.need |
33.A.twice that |
B.twice what |
C.that twice |
D.what twice |
34.A.Watching |
B.Looking |
C.Observing |
D.Noticing |
35.A.awarded |
B.honored |
C.returned |
D.rewarded |