D 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.y 题目和参考答案——青夏教育精英家教网—

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D
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”一in this case something like six hours，almost a full night’s sleep．
Sleep debt is the difference between the amount of sleep you should be getting and the amount you actually get．It’s a shortage that grows every time we skim some extra minutes off our nightly sleep．“People get more sleep debt gradually without being noticed，”says William C．Dement，founder of the Stanford University Sleep Clinic．Studies show that such short term sleep lack leads to a foggy brain，worsened vision，and trouble remembering．Long-term effects include obesity(肥胖)，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 all 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 rules 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．
53．If you have short-term sleep lack，you may___________．
A．put on weight    B．get heart disease  C．hate eating food   D．have a poor sight
54．The example of sleep math is used to show______．
A．in what case you build up a sleep debt
B．in what way you can make up for lack of sleep
C．why you are energetic even without enough sleep
D．why you need six hours’sleep every night
55．By saying the underlined sentence，Dement means that______．
A．you need a lot of sleep to be a superman
B．you will be in a good state with enough sleep
C．you need to be a superman to repay sleep debt
D．you will become a superman with more sleep debt
56．What might be the most suitable title for the passage?
A．How can you keep energetic?    B．What is sleep debt?
C．Can you catch up on lost sleep? D．Can coffee refresh you?

53—56 DABC

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小题1:

A．particularly

B．probably

C．seldom

D．never

小题2:

A．fighting

B．boasting

C．arguing

D．playing

小题3:

A．fascinating

B．interesting

C．graceful

D．the best

小题4:

A．However

B．What

C．Whatever

D．Like

小题5:

A．the playground

B．their homes

C．bathroom

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小题6:

A．nice

B．funny

C．easy

D．nothing

小题7:

A．dirty

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C．enough

D．adequate

小题8:

A．turn

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小题9:

A．sufficient

B．unique

C．silly

D．the case

小题10:

A．stricken

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D
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B
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科目：高中英语 来源：不详 题型：阅读理解

B
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A．play a small trick                B．feel the surface of the object
C．do some exercises                D．reduce your anxiety
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A．sense of touching            B．sense of smell
C．sense of humour            D．sense of listening
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C
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C．save a lot of trouble
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科目：高中英语 来源：不详 题型：阅读理解

C
At present, in many American cities expecially, many teachers in the public schools say they are underpaid. They point to jobs such as secretary or truck driver, which often pay more to start than that of a teacher. In many other fields, such as law, medicine, computer science, a beginning worker may make more than a teacher who has taught for several years.
Teaching has never been a profession that attracted people interested in high salaries. It is by history a profession that has provided rewards in addition to money—the satisfaction of sharing knowledge, of influencing others, of guiding young people. But in the past several years, there are more difficulties in teaching, for many, than there are rewards.
Unruly students, especially in big cities, large classes and a lack of support from the public in terms of money and understanding have led many public school teachers to leave the profession.
As a result, many of the best students, who would have chosen teaching as their life career in the past, are going into other fields.
Another reason for this change in teacher candidates is the changing status of women in the United States. Until the late 1960s and 1970s, one of the most popular choices for women was teaching. But as other professions, such as law and medicine opened up to women, women stopped pouring into teacher training programs. Thus, a major pool of excellent candidates for the teaching profession dwindled.
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63．The underlined word “that” in Paragraph 1 refers to “      ”.
A．money             B．job
C．secretary          D．truck driver
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A．Teachers work harder and get underpaid.
B．Teahcers have no opportunities to work in other fields.
C．Teaching can attract best students to work as a teacher.
D．Teaching can provide rewards as well as high salaries.
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A．the government doesn’t finacially support them
B．they have to work longer hours than a lawyer
C．their students refuse to listen to them
D．they are not fairly treated
66．The author believes that change in teachers’ status in the United States       .
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B．is impossible
C．influences people’s attitude
D．needs time

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科目：高中英语 来源：不详 题型：阅读理解

C
Could the solution to world future energy needs lie in the ocean? It’s possible.
We are not talking about oil, but another potential untapped energy resource called “methane hydrates”.
Methane hydrates are hard, ice-like white solids that form naturally in deposits (沉积物) on ocean floors. They arecomposed of water and highly concentrated methane produced by the microorganisms living in the deposits.
The remarkable thing is that you can hold a flame to a piece of methane hydrate and it will catch on fire. It’s been called “burning ice.”
Methane hydrates are spread around the world. These deposits may in the future become a very important fuel resource. One researcher calculated that a small area off the Southeastern coast of America may contain methane hydrates equal to 30 times the annual U.S. consumption of natural gas.
Right now there are very significant technical and financial challenges facing us before we could exploit this as a resource. Scientists around the world are studying these challenges. One big issue is how to get these methane hydrates off the ocean floor, causing undersea landslides and tidal waves.
Another issue is how to handle the matter after it is brought up. It’s also unclear whether it would make more sense to “mine” solid hydrates or tap the gases found with them. And many deposits may occur in low concentrations with no commercial potential.
Japan, which has no oil supplies of its own, has thrown itself into burning ice research because it has deposits off its shores which could make Japan less dependent on foreign suppliers of oil.
The U.S. Department of Energy and Congress are also supporting research. However, the US administration’s energy policy is focused on traditional fossil (化石) fuels. And at least for now, developing burning ice into a fuel source isn’t high on the energy industry’s list. But if natural gas continues to rise in price, exploiting burning ice might become economically practical.
59. What’s the meaning of the underlined word in Paragraph Two?
A. not existed              B. Unseen         C. available but not used              D. unreal
60. What can you learn from the text?
A. Burning ice has been used in some countries.
B. Applying burning ice tops the energy list in America.
C. Burning ice exists in few countries.
D. There are still some problems in developing the burning ice
61. Why has Japan already begun to develop the burning ice?
A. It is a developed country. B. They want to help other countries.
C. It lacks oil supplies of its own. D. America asked Japan to do so.
62. Which one is the best title of the text?
A. World Energy Shortage           B. Burning Ice Holds Hope as Fuel Source
C. Methane Hydrates               D. Methane Hydrates Spread around the World

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