Have you ever dreamed of visiting a planet in the Milky Way (銀河系)? While the trip sounds exciting, it would take years and years to reach your destination. So in the future, bedtime for astronauts may be more than a few hours of regular shut eye. They would have to sleep for years.
European researchers are now conducting hibernation experiments. The study may help them understand whether humans could ever sleep through the years it would take for a space flight to distant planets. "If there was an effective technology, it could make deep-space travel a reality," said Mark Ayre of the European Space Agency last month.
What seems like a science fiction is not completely unlikely. Researchers have been able to use chemicals to put living cells into a sleep-like state where they don’t age. They have now moved on to the small, non-hibernating mammals (哺乳動物) like rats.
A major challenge is the fact that cells can be very simple systems, whereas body organs are far more complex (復(fù)雜的). "It’s like moving from a simple Apple computer to a supercomputer," said Marco Biggiogera, a hibernation researcher at Italy’s University of Pavia.Just like bears and frogs, the hibernation of human beings would cause a person’s metabolism (新陳代謝) to lower so they would need less energy.
Medical research, however, is just half of a space flight hibernation system. There is a challenge of designing a suitable protective shelter (棲身所). Such a shelter would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor (監(jiān)控) life functions and serve the physiological needs of the hibernator.
According to Ayre, the six-person Human Outer Planets Exploration Mission (使命) to Jupiter’s moon (木星的衛(wèi)星) Callisto could be an opportunity to use human hibernation. The mission aims to send six persons on a five-year flight to Callisto, where they will spend 30 days, in 2045.
小題1:According to the article, the hibernation research ______.
A.is just an ideaB.is always a science fiction
C.has already finished successfullyD.has made some progress
小題2:In a hibernating state, a person needs ______.
A.less sleep B.more foodC.less energyD.more movement
小題3: The first try of the hibernation technology _____ the six-person Human Outer Planets
Exploration Mission to Jupiter’s moon Callisto.
A.will beB.has been planned for
C.is certain to beD.may be
小題4:What is the best title of the article?
A.Hibernation Study For Space TravelB.Welcome To Our Space Travel
C.To Hibernate, To Live Longer D.Welcome To The Milky Way

小題1:D
小題2:C
小題3:D
小題4:A
星際探索固然重要,可是怎樣打發(fā)漫漫旅途呢?別急,人類“冬眠”技術(shù)讓你一覺睡到目的地。
小題1:推斷題。根據(jù)短文第三段內(nèi)容可以推出人類“冬眠”技術(shù)已經(jīng)取得了進(jìn)展。
小題2:細(xì)節(jié)題。根據(jù)短文第四段的最后一句they would need less energy可知。
小題3:推斷題。根據(jù)短文最后一段的第一句話中could一詞的委婉語氣可知。
小題4:主旨題。認(rèn)真分析原文可知,本文自始至終介紹的是在星際探索中使用冬眠技術(shù)的研究情況,因此以Hibernation Study For Space Travel為題既具有高度的概括性、強(qiáng)烈的針對性,又具有一定的醒目性。
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It seems that the children of Silicon Valley are paying the price of genius.
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A.The earth is one of the oldest planets in our galaxy.
B.Most scientists believe that there is intelligent life on other planets.
C.Scientists are trying different ways to find signs of life on other planets.
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  48.A. avoid B. remember C. protect D. gain
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  50.A. offer B. supply C. mean D. provide
  51.A. worker B. beginner C. owner D. manager
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Whatever the cause of the heat may be,we do know that the earth gets hotter the farther down we dig.In deep mines and oil wells the temperatures rise about 1°F for every 50 feet.At this rate of the temperature 40 miles below the earth’s surface should be over 4 000°.This is much hotter than necessary to melt rock.However,the pressure of the rock above keeps most materials from melting at their usual melting points.Geologists believe that the rock deep in the earth may be plastic,or puttylike(油灰狀的).In other words,the rock yields slowly to pressure but is not liquid.But if some change in the earth’s crust releases the pressure,the rock melts.Then the hot,liquid rock can move up toward the surface.
小題1:The cause for the great heat inside of the earth is______.
A.great pressure of the earth’s outer layers
B.the heat left from the time when the earth was formed
C.radioactive elements giving out heat
D.not sure
小題2:According to the passage,______ prevents most rock from melting at its usual melting points.
A.the pressure of the rock itself
B.the pressure of the rock above
C.the pressure of the earth’s outer layers
D.the heat given out by some radioactive elements
小題3:According to the passage,which of the following is NOT true?
A.The farther down,the hotter the earth gets.
B.The rock deep in the earth is liquid.
C.When the pressure releases from the earth’s crust,the rock melts.
D.Rock would be melted at 4 000°.

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科目:高中英語 來源:不詳 題型:閱讀理解

US college students are burdened, with credit card (信用卡)debt, according to a study published Tuesday, and the problem can be serious-ranging from more drop-outs, to future employment problems and even self-murder. The study, by Georgetown University sociologist (社會學(xué)家) Robert Manning, blamed credit card issuers for actively targeting students and colleges for allowing them to do so. "The unrestricted selling of credit cards in universities or colleges is so aggressive that it now forms a greater threat than alcohol or sexual diseases," Manning told a news conference in Washington. "If we do not quickly deal with this serious problem, the matter will continue to get worse, with social consequences far more tragic (悲劇的) than mere dollars and cents. "
Based on hundreds of face-to-face interviews and surveys with students, Manning concluded both the number with credit card debt and their indebtedness had been "underreported" in previous studies-which failed to reflect the "survival strategies" many used to deal with their debts. These included the use of federal student loans to pay off credit cards, effectively shifting the debt, appealing to parents for loans, reducing course work hours to increase time at paid jobs, or even dropping out altogether to work full time.
"Official drop-out rates include growing numbers of students who are unable to cope with the stress of their debts and / or part time jobs for servicing their credit cards, " the study said. "Students credit card debts are examined during the employment process and may be an important factor in evaluating future employees," it noted. O’Donnell and Manning agreed students should bear some responsibility for reckless use of credit, but said credit card companies also had to be held responsible for making it so easy for them to get into debt. Manning said one of the most troublesome aspects of the student credit card issue was "the seduction (誘惑) of college and university officials by the credit card industry".
小題1:Sociologist Robert Manning's study shows that     .
A.the number of American college students using credit cards on campus is increasing
B.more and more American college students meet with credit card debt problems
C.more and more American colleges encourage students to use credit cards to make profits
D.credit card issuers will run into debt for encouraging college students to use credit cards
小題2:The author's feeling towards college students with credit card debts is __.
A.discouraged and negativeB.pitiful and critical
C.indifferent and disapprovingD.negative and doubtful
小題3:The author implies all of following should be responsible for this problem EXCEPT      .
A.credit card issuers B.college authorities
C.parents of the studentsD.students themselves
小題4:The word "reckless" in Paragraph 3 can be replaced by        .
A.inconsiderateB.frequent C.carefulD.regular

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