Astronauts’ meals have come a long way from the free-dried powders and semi—liquid pastes of decades ago，now US scientists want to grow vegetables in mini—greenhouses on the moon．
Scientists say they are looking forward to a time when residents of future lunar or even Martian outsteps will be able to dine on fresh vegetables．Paragon Space Development Corporation has unveiled what it called the first step toward growing flowers——and eventually food on the moon．
This is a sealed greenhouse that looks like a bell jar encased in a 46-cm triangular aluminiumframe．It is designed to safely land a laboratory plant on the lunar surface，and protect it while it grows．
The miniature greenhouse is to be launched into space by Odyssey Moon Ltd, a participant in the Google Lunar X Prize. This competition offers $21 million to any entrant who can launch, land and operate a rover on the lunar surface.
Paragon officials say future testing of the “Lunar Oasis” will be driven by Odyssey’s flight Schedule, which will not happen until 2012 at the earliest．
When it does lift off the greenhouse will contain the seeds of Brassica, a hardy plant related to Brussels sprouts and cabbage. Because Brassica goes from seed to flower in just 14 days, it can complete its life cycle in a single lunar night.
“Colonizing the Moon or Mars seems so far away，but it is important that we do this research now. ”P(pán)aragon president Jane Poynter said．
“It takes a long time to get a lot of research, and to get integrated, reliable efficient systems before colonists move in. ”she said．
小題1:The article is written mainly to__________．
A．predict the astronauts’ meals in the future
B．introduce an experiment “Lunar Oasis’’
C．tell us the future development of astronomy
D．focus on the human’s great progress
小題2:The article implies that__________．
A．a(chǎn)stronauts can grow flowers in space at present
B．Paragon and NASA will carry out the test separately
C．Lunar Oasis is a series of experiments carried out in space
D．the earliest testing of the Lunar Oasis may be in 2012
小題3:The underlined word “colonists” in the last paragraph probably has the meaning of______．
A．plantsB．wild beastsC．human beingsD．scientists
小題4:The seeds of Brassica will be contained in the greenhouse mainly because _________.
A．their life cycle is much shorter
B．they are more nutritious than other food
C．they are related to Brussels sprouts and cabbage
D．they are very delicious
小題1:B小題1:D小題1:C小題1:A
略
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：完形填空

Thanks to a combination of young businessmen, large numbers of university students and revitalization (新生) efforts by the local and national governments, today’s Nanjing has an      36   of youthful exuberance (繁茂) that would have been    37   only a few decades ago.   38  , the city, a booming city of 6.5 million on the banks of the Yangtze River some 185 miles west of Shanghai, bears    39   resemblance to the former capital of China that suffered the worst cruelty and violence of World War II.
40   Nanjing has shown a remarkable capacity for reinvention during its 2,500-year history. And in recent years, the city has moved    41   its tragic past to become a vital engine of China’s economic growth, thanks    42   to its position in the middle of China’s prosperous eastern seaboard. Growth has also    43   thanks to improved ground transportation: A new bullet train linking Nanjing and Shanghai started service last year,    44   travel time between the cities from several hours to just 75 minutes, and a Beijing-Shanghai high-speed line is    45  to open later this year, with a stop in Nanjing. Within the city, two metro lines were built in the last few years; 15 more are planned to begin service by 2030.
Signs of Nanjing’s    46   wealth and optimism can be seen everywhere. In the heart of the downtown Xinjiekou district, a bronze statue of Sun Yat-sen,    47   the father of modern China, looks    48   over a busy    49   area.
There is perhaps no more    50   symbol of the city’s transformation than the Zifeng Tower, a 1,480-foot skyscraper that opened its doors last May.    51   offices, restaurants and an InterContinental hotel, the tower is the second-tallest building in China and billed as the seventh-tallest in the world.
Underlying all this development is a large Chinese and    52  student population — there are several major universities, plus a branch of Johns Hopkins’s international studies school. In fact, art and music    53   in all sorts of places.
On a larger    54  , local government officials and private investors are pushing the city as a rising center for contemporary art and architecture, hoping to attract    55   from the neon-bathed streets of its neighbor Shanghai.
小題1:
A．a(chǎn)dvanceB．a(chǎn)ffectionC．a(chǎn)irD．a(chǎn)bility
小題2:
A．unforgettableB．unthinkableC．unbearableD．unnecessary
小題3:
A．ActuallyB．RegretfullyC．HopefullyD．Consequently
小題4:
A．closeB．slightC．muchD．little
小題5:
A．BecauseB．ButC．AsD．Since
小題6:
A．beyondB．onC．offD．out
小題7:
A．in addition B．in allC．in partD．in fact
小題8:
A．startedB．enlargedC．existedD．a(chǎn)ccelerated
小題9:
A．removingB．cuttingC．dividing D．lowering
小題10:
A．scheduledB．inventedC．desiredD．meant
小題11:
A．a(chǎn)ttractiveB．well-receivedC．newfound D．discovered
小題12:
A．thoughtB．treatedC．consideredD．elected
小題13:
A．outB．a(chǎn)tC．a(chǎn)boutD．for
小題14:
A．remoteB．regionalC．ruralD．commercial
小題15:
A．universalB．visibleC．traditionalD．political
小題16:
A．KeepingB．ConsistingC．OpeningD．Housing
小題17:
A．BritishB．westernC．AmericanD．foreign
小題18:
A．spring upB．stand upC．set upD．keep up
小題19:
A．extentB．degreeC．scaleD．level
小題20:
A．businessmenB．studentsC．touristsD．painters

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：完形填空

完形填空（每小題1分，共20分）
A high school history teacher once told us, “If you make one close friend in school, you will be most fortunate. A   21  friend is someone who stays with you for life”.   22  teaches that he was right. Good friendship is just not easily   23  .
It is possible that we simply do not stay in one place   24  enough for true
friendship to develop. However, there can be   25  disagreement on the need for each of us to think carefully about the kind of friendship we want.
To most of us, friendships are considered very important,   26  we need to
have it clear in our minds the kinds of friendship we want. Are they to be close or   27  at arm’s length? Do we want to   28  ourselves or do we want to walk on the surface? For some people, many friendships on the surface are   29  enough. And that’s all right. But at some   30  we need to make sure that our expectations are the same as our friends’ expectations. The sharing of personal experience including our tears as well as our dark   31  is the surest way to deepen friendships. But it must   32  slowly and carried on only if there are   33  of interest and action in return.
What are some of the   34  of our friendship? The greatest is to   35  too
much too soon. Deep relationships   36  time. Another “major difficulty” is the selfishness to think one “possesses” the other, including his time and attention.   37 , friendships require actions in return. In other words, you must   38  as much as you take. Finally there is a question of taking care of. Unless you spend   39  time together, talking on the phone, writing letters, doing things together, friendships will die   40  .
小題1:
A．usefulB．fair-weather C．school D．true
小題2:
A．Knowledge B．Hardship C．Experience D．Schooling
小題3:
A．formed B．understoodC．realized D．produced
小題4:
A．certain B．long C．patiently D．Fortunately
小題5:
A．some B．a(chǎn)ny C．no D．great
小題6:
A．a(chǎn)ndB．but C．or D．while
小題7:
A．remained B．left C．stayedD．kept
小題8:
A．shareB．deepen C．strengthen D．hide
小題9:
A．lessB．not C．quiteD．very
小題10:
A．degree B．placesC．point D．length
小題11:
A．clothes B．dreamsC．cloudsD．Letters
小題12:
A．be undertaking B．be undertakenC．have been undertaken D．have been undertaking
小題13:
A．signs B．marksC．sciences D．sights
小題14:
A．disadvantagesB．differences C．requirementsD．difficulties
小題15: A. command        B. pull out            Ｃ. expect          D. develop
小題16:
A．waste B．take C．kill D．spend
小題17:
A．SurprisinglyB．Differently C．Strangely D．Similarly
小題18:
A．a(chǎn)ctB．possess C．giveD．walk
小題19:
A．considerate B．reasonableC．wonderful D．comfortable
小題20:
A．a(chǎn)way B．downC．out D．off

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

There is no doubt that much of the profit of a business—sometimes the whole of its success—depends upon the use of the odds and ends．The odds and ends are various small things，which are left over when the main things are produced．But they possess a real value of their own．
If a business，big or small，looked down upon these odds and ends，it would mean a big difference in the amount of the benefit of the business．Take a meat factory for instance， there are countless odds and ends—bones and hair，which can be made into glue and rope to increase its profit greatly．
Then，if we are college students，what about our odds and ends—the odd moments？ Take time for example．Every one of us has the exact same amount of it．Everyone’s success or failure depends on the use of their time．But everyone uses the time more or less in the same way．However，why many great men in science or art have made huge successes for themselves in the world？Because they have made best use of their odd moments．Take Thomas A．Edison， he never allowed his odd moments to slip by．He thought，planned，and tried his inventions．He always worked twenty hours out of each twenty-four．His inventions made him famous all over the world，and provided valuable wealth for the human beings．
So, remember this axiom：very busy people always find time for everything．However，people with great spare time find time for nothing．Is it very strange？Not at all！The question is how to gather up fragments of time and make full use of them．As many big businesses have found，that the real profit is in using the odds and ends．We also must do in this way to make best use of our odd moments and manage to be successful in something that we do．
小題1: What are odds and ends？
A．They are nothing useful．
B．They are various small，but valuable things．
C．They are the main things that factories produce．
D．They are odd moments students deny to gather up．
小題2: Why should the odds and ends be made full use of ？Because  ____   ．
A．lots of factors in success or in failure depend on the best use of odds and ends
B．they control to possess a value of their own
C．they are various small things people don’t want
D．they are useless things left over when the main things are produced
小題3:What does the word “Axiom” in the fourth paragraph mean?
A．clear and evident without proof
B．statement accepted as true without proof of argument
C．statement that can be argued
D．regulation accepted in scientific usage
小題4: “Fragments of time” equals  “____   ”in the above passage．
A．the odds and endsB．immense leisure
C．the main thingsD．the odd moments

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

There is a popular belief among parents that schools are no longer interested in spelling. No school I have ever taught in has ever ignored spelling or considered it unimportant as a basic skill. There are, however, different ideas about how to teach it, or how much priority (優(yōu)先) it must be given over general language development and writing ability. The problem is how to encourage a child to express himself freely and confidently in writing without holding him back with the complexities (復(fù)雜性) of spelling.
If spelling becomes the only focal (焦點(diǎn)的) point of his teacher’s interest, clearly a bright child will be likely to “play safe”. He will tend to write only words within his spelling range, choosing to avoid adventurous language. That’s why teachers often encourage the early use of dictionaries and pay attention to content rather than technical ability.
I was once shocked to read on the bottom of a sensitive piece of writing about a personal experience: “This work is terrible! There are far too many spelling errors and your writing is terrible.” It may have been a sharp criticism of the pupil’s technical abilities in writing, but it was also a sad reflection on the teacher who had omitted to read the essay, which contained some beautiful expressions of the child’s deep feelings. The teacher was not wrong to draw attention to the errors, but if his priorities had centered on the child’s ideas, an expression of his disappointment with the presentation would have given the pupil more motivation (動(dòng)機(jī)) to seek improvement.
小題1:Teachers are different in their opinions about _________.
A．the difficulties in teaching spelling
B．the role of spelling in general language development
C．the complexities of the basic writing skills
D．the necessity of teaching spelling
小題2: The underlined expression “play safe” probably means ________.
A．to write carefullyB．to do as teachers say
C．to use dictionaries frequentlyD．to avoid using words one is not sure of
小題3:Teachers encourage the use of dictionaries so that ____________.
A．students will be able to express their ideas more freely
B．students will have more confidence in writing
C．students will have less trouble in correcting mistakes
D．students will learn to be independent of teachers
小題4:The author seems to think that the teacher’s judgment on that sensitive piece of writing is __________.
A．unfairB．reasonableC．foolishD．careless
小題5:The major point discussed in the passage is ___________.
A．the importance of developing writing skills
B．the complexities of spelling
C．the correct way of marking compositions
D．the relationship between spelling and the content of a composition

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The Mystery of the Flashing Fireflies
During summer nights fireflies flash in the darkness. They look like bright spots of light dancing on the breeze. Catching them in a jar for a few minutes can be fun. Fireflies are not really flies, though. They are winged beetles. Scientists are using these special beetles to learn more about our world.
The reason a firefly flashed its light is to find a mate. There are around two thousand species, or kinds, of fireflies. Fireflies mate only with their own species. Each kind of firefly has its own flash pattern. It is important that fireflies recognize this pattern. That way they can find bugs of their own kind. The male firefly flies around in the sky while the female firefly stays close to the ground.
For many years, how a firefly flashes its light was a mystery. Scientists now know that a firefly’s light is a cold light. It gives off all of its power as light. It does not produce heat. A normal light bulb gives off only ten percent of its power as light. The rest of the power is wasted as heat. That is why a light bulb that has been on for a while is very hot. The firefly’s light does not feel hot like a light bulb.
Scientists have also learned that fireflies have a small built-in lantern. This special lantern is located inside a firefly’s body. To create light, a gas flows through tiny tubes. This causes the firefly to light up. A firefly can also turn its light on and off quickly. This puzzled scientists. They learned that short bursts of this gas make the firefly glow. When the gas fades, the light goes out. This process happens very quickly.
Scientists know that what they learn from fireflies will be important. Medical studies using fireflies are helping scientists fight illnesses in human beings. They have made new medicines from the chemicals used by fireflies to make light. Fireflies have also helped with new discoveries. New flashlights and flares have been made based on fireflies. These new flashlights and flares produce a cold light like a firefly. This way all the power makes the light shine. This little bug may be a pleasure to watch, but it is also an important part of our lives.
小題1:Why did the author most likely include Paragraph 4?
A．To explain how fireflies make light.B．To describe different kinds of fireflies.
C．To show how much power fireflies use.D．To describe why fireflies make light.
小題2:Which of these is the best choice for a heading for Paragraph 5?
A．The Cool Light of FirefliesB．Watching Fireflies Flash
C．Understanding the PatternsD．Learning from Fireflies
小題3:According to the passage, a firefly’s light is different from a light bulb’s light because the firefly’s light _______.
A．shines brighterB．does not fadeC．lasts longerD．is not hot
小題4:A reader asks this question about the passage: “ How many different kinds of fireflies are there?” Which paragraph from the passage answers the question?
A．Paragraph 2B．Paragraph 3C．Paragraph 4D．Paragraph 5
小題5:The author most likely wrote this passage in order to __.
A．tell why fireflies light upB．give facts about fireflies
C．show how fireflies help doctorsD．compare a firefly to a light bulb

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

WHAT happens to a teenage kid when the world he thought he knew suddenly changes? Find out in Little Brother by American author Cory Doctorow． It is a fascinating book for a new generation of sci-fi readers．
Marcus Yallow, 17, from San Francisco is much more comfortable in front of a computer than obeying the rules of society． Smart, fast and wise to the ways of the networked world, he has no trouble outwitting （騙過(guò)） his high school's monitoring system． This way he and his friends get to head off to play a popular online game in real life．
While they are playing, a bomb explodes on the Bay Bridge． Marcus stops a military vehicle to get help for his injured friend, but this simple act throws him into a Department of Homeland Security （DHS） secret prison． There he is treated as a possible terrorist． He is eventually let go after four days, but his injured friend disappears．
When he returns, Marcus discovers that there are many "security measures" in place and that now all citizens are treated like potential terrorists． While some consider this government action necessary for public safety, Marcus sees this as a complete destruction of the rights he is supposed to have as a citizen．
He knows that no one will believe his story, which leaves him with only one thing to do: to take down the DHS himself． He helps organize a large network called Xnet to spread the truth, anonymously （匿名地）．
The book presents a young man who is irresponsible, but learns about himself, and grows, in the course of the story． As part of this learning and growing he becomes aware of very serious issues about his society．
小題1: What kind of article does this passage belong to?     
A．A fascinating story．B．A book review．
C．News reportD．A TV programme
小題2: The underlined word destruction in the passage means         ．     
A．damageB．rewardC．ruinD．protection
小題3: Marcus Yallow was sent to prison because         ．        
A．he killed his friend
B．he bombed a military vehicle
C．he did something that a possible terrorist could do
D．his injured friend disappeared
小題4: From the second paragraph we can infer that         ．     
A．Marcus Yallow is much more comfortable obeying the rules of society
B．Marcus Yallow is smart, fast and wise in real life
C．Marcus Yallow always plays online games in real life
D．Marcus Yallow is expert at the network world
小題5: In the end of the book, Marcus Yallow         ．      
A．is supposed to be more irresponsible
B．becomes aware of very serious issues about his society
C．presents a young man who is irresponsible
D．plays a popular online game in real life

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

A new study warns that about thirty percent of the world's people may not have enough water by the year 2025.
A private American organization called Population Action International did the new study. It says more than three-hundred-thirty-five-million people lack enough water now. The people live in twenty-eight countries. Most of the countries are in Africa or the Middle East.
P-A-I researcher Robert Engelman says by the year 2025, about three-thousand-million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on Earth stays the same.
Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.
The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters are not safe. Mr. Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.
The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture.
The report also says long-term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.
小題1:           are expected to have severe water problems by the year 2025.
A．18 countriesB．No countries
C．46 countriesD．28 countries
小題2:All the following are true except            .
A．New industries need a lot of water
B．There are solutions to the water problem
C．Egypt now has enough fresh water
D．Lack of water may cause conflict between countries
小題3:It can be learned that          .
A. The ability of developing has nothing to do with lack of water.
B. . It is not known whether diseases have something to do with lack of water
C. Lack of water may also result from international conflict
D There is connection between providing clean water and slowing population growth
小題4:The best title of the passage would be         .
A．World Water ShortageB．Population and Water
C．World ConflictD．Diseases and Water

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

You’re lost in the world of dreams and sleep. You roll over, smiling as you come across a swimming pool filled with chocolate. And then, your wonderful dream becomes a nightmare when someone is screaming, “Get up!” It’s just what every teenager goes through each morning!
Now, there seems to be one school that finally understands that requiring teens to show up at 9 am is not just cruel but also harmful to both the kids and the school.
The Monkseaton High School in North Tyneside, Britain, recently decided to experiment to see if there is any difference in student behavior if they just pushed back the start of their day by one hour, from 9 am to 10 am. And the results are surprising.
Since carrying out the later start, Monkseaton has seen a 28% drop in truancy, even hardly any lateness, and best of all, higher test scores. One of the reasons is that the teenagers are much happier to have the extra hour of sleep, but there is also a scientific reason behind why they need the extra sleep.
The school’s decision to push back the time was based on the research done by Oxford Professor Russell Foster, who pointed out that teenagers and adults have different sleep cycles, explaining why teenagers go to bed late and wake up late.
While adults are wide awake and ready at 8 am, teenagers are not fully awake until 10 am, sometimes even noon. Teachers may argue that their students perform better in the morning, but in fact, it is because they are in the zone while their students are still sleepy, making the students easier to control. Memory tests prove that the more difficult classes should be in the afternoon when teenagers are most wide awake.
The Monkseaton school officials are encouraged by the results and plan on voting to make it a permanent change.
小題1:What’s the best title of this passage?
A．Get up early, teenagers!
B．Finally, a school understands teenagers.
C．Why do teenagers stay up late?
D．Difference between teens and adults.
小題2:What’s the meaning of the underlined word “truancy”?
A．gradesB．subject sC．a(chǎn)bsenceD．classes
小題3:What can we learn from the passage?
A．Teenagers and adults have the same sleep cycle.
B．Teenagers are fully awake at 10 am.
C．Teenagers are much happier to sleep than study.
D．Teenagers need the extra sleep also for a scientific reason.
小題4:Which of the following statements is NOT true according to the passage?
A．The Monkseaton school is satisfied with the result of experiments.
B．It is cruel for the teenagers to show up at 9 am.
C．The Monkseaton school plans to change the school time forever.
D．Teenagers perform better in the morning than in the afternoon.

查看答案和解析>>

同步練習(xí)冊(cè)答案