Before astronauts can go into space, they have to have the right suit. That’s why NASA(美國國家航天和航空局)scientists are developing a new kind of space suit——lighter and more flexible than before. These new space suits will have lots of mobility(靈活性) for the astronauts, but will not need much maintenance. NASA wants the suits to include new technology that can help astronauts be safe in outer space.
Right now, the American space suit weighs about 275 pounds and is big and massive. But the suit is also easy to work in for long periods of time. The Russian space suit is less complicated, but is used only a few times and then gets thrown away.
“Finding the right balance is always going to be a challenge,” said a long-time astronaut Jeff Williams. Williams has worn both types of suits. Space suits protect astronauts from both extreme heat and freezing temperatures. They carry life-packs with oxygen for the astronauts. They also shield astronauts from radiation, or particles that send out harmful rays.
Scientists are using computers to design the new suits. This allows them to change the design again and again, and to even test the design out before actually making anything. “There’s a lot more capable tools and technology to get the job done——a lot more knowledge, as well,” said Joe Kosmo. Kosmo helped design, develop, and test suits during the Mercury, Gemini, Apollo, Skylab, and shuttle periods.
These new space suits will be much lighter and use a new kind of complex material. They also will have a smaller life support backpack, thanks to tiny electronics. NASA hopes to have the first prototypes(原型) in development by 2010 and certify(證明) the suit by 2012. This will be in time for the launch of the Orion spaceship in 2014.
小題1: What characteristic does the new space suit have?
A.The new space suit will need much maintenance.
B.The new space suit will be heavier than before.
C.The new space suit will have less mobility than before.
D.The new suit will use new technology to help astronauts be safe in outer space.
小題2:What’s the disadvantage of the Russian space suit?
A.The Russian space suit is big and massive.
B.The Russian space suit is much complicated.
C.The Russian space suit is merely used a few times.
D.The Russian space suit is easy to work in for long periods of time.
小題3:The underlined word “shield” in the third paragraph might mean_______.
A.harmB.protectC.helpD.warn
小題4:Why can scientists test the design out before actually making the new space suits?
A.Because designing the new space suit is not a complex task.
B.Because computers are being used to help scientists design the new space suits.
C.Because it needs little knowledge to design the new space suits.
D.Because the scientists only change the old space suits a little and make them into the new ones.
小題5:How long will it take scientists to put the new space suits from prototypes into the first practical use?
A.Two years.B.Three years.C.Four years.D.Six years.
小題1:D小題1:C小題1:B小題1:B小題1:C
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源: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 來源: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 來源:不詳 題型:完形填空

閱讀下面短文,從短文后各題所給的四個選項(A、B、C和D)中,選出可以填入空白處的最佳選項,并在答題卡上將該項涂黑。
Just listen
I think  the most basic and powerful way to connect to another person is to listen. Just listen. Perhaps the most important thing we ever give each other is our  16 ,and especially if it’s given from the  17 .When people are talking,there’s no need to do anything but  18    them.Just take them  19 .Listen to what they’re saying.Care about it.Most times caring about it is even more important than  20  it.
One of my patients told me that when she  21  to tell her story,people often  22  to tell her that they had once had something just like what happened to her.Her pain became a story about themselves.  23  she stopped talking to most people.It was just too  24 .We connect through listening.When we interrupt what someone is saying to let them know that we understand,we move the  25  of attention to ourselves.But when we listen,they know we care.
I have ever learned to  26  to someone crying by just listening.in the old days I used to reach for the tissues (紙巾)  27  I realized that passing a person a tissue may be just another way to shut them  28 ,to take them out of their   29  of sadness and pain. Now I just listen.When they have cried all they need to cry, they find me there  30   them.
This  31  thing has not been that easy to learn.It certainly went against everything I had been   32  since I was very young at school.I thought people listened only because they were too  33  to speak or did not know the answer.A loving silence often has far more   34   to connect than the most well-intentioned  35 .
小題1:
A.introductionB.instructionC.a(chǎn)ttentionD.relaxation
小題2:
A.headB.memoryC.mindD.heart
小題3:
A.talk toB.listen toC.object toD.stick to
小題4:
A.inB.upC.offD.a(chǎn)way
小題5:
A.denyingB.rememberingC.questioningD.understanding
小題6:
A.managedB.triedC.hopedD.expected
小題7:
A.encouragedB.interruptedC.discouragedD.urged
小題8:
A.EventuallyB.Immediately C.CompletelyD.Especially
小題9:
A.impoliteB.meaninglessC.lonelyD.selfish
小題10:
A.middleB.focusC.centerD.choice
小題11:
A.respondB.compareC.linkD.regret
小題12:
A.unlessB.ifC.untilD.when
小題13:
A.downB.a(chǎn)wayC.inD.off
小題14:
A.experimentB.mixtureC.judgmentD.experience
小題15:
A.withB.a(chǎn)gainstC.forD.a(chǎn)mong
小題16:
A.complexB.simpleC.complicatedD.single
小題17:
A.mentionedB.publishedC.taughtD.proved
小題18:
A.shyB.greedyC.a(chǎn)ctiveD.proud
小題19:
A.strengthB.energyC.powerD.force
小題20:
A.gesturesB.praiseC.criticismD.words

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

We each have a memory(記憶力). That’s why we can still remember things after a long time. Some people have very good memories and they can easily learn many things by heart, but some people can only remember things when they say or do them again and again. Many of the great men of the world have got surprising memories.
A good memory is a great help in learning a language. Everybody learns his mother language when he is a small child. He hears the sounds, remembers them and then he learns to speak. Some children are living with their parents in foreign countries. They can learn two languages as easily as one because they hear, remember and speak two languages every day. In school it is not so easy to learn a foreign language because the pupils have so little time for it, and they are busy with other subjects, too.
But your memory will become better and better when you do more and more exercises.
小題1:、Some people can easily learn many things by heart because                .
A.they always sleep very wellB.they often eat good food
C.they read a lot of booksD.they have very good memories
小題2:.、Everybody learns his mother language         .
A.a(chǎn)t the age of sixB.when he is a small child
C.a(chǎn)fter he goes to schoolD.when he can read and write
小題3:.、Before a child can speak, he must              .
A.read and writeB.make sentences
C.hear and remember the soundsD.think hard
小題4:.、In school the pupils can’t learn a foreign language well because          .
A.they have no good memoriesB.they have no recorders
C.they have too much time for itD.they are busy with other subjects
小題5:.、Your memory will become better and better          .
A.if you have plenty of good food
B.if you do more and more exercises
C.if you do morning exercises every day
D.if you get up early

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

There were smiling children all the way. Clearly they knew at what time the train passed their homes and they made it their business to stand along the railway, wave to complete strangers and cheer them up as they rushed towards Penang. Often whole families stood outside their homes and waved and smiled as if those on the trains were their favorite relatives. This is the simple village people of Malaysia. I was moved.
I had always traveled to Malaysia by plane or car, so this was the first time I was on a train. I did not particularly relish the long train journey and had brought along a dozen magazines to read and reread. I looked about the train. There was not one familiar face. I sighed and sat down to read my Economics.
It was not long before the train was across the Causeway and in Malaysia. Johore Baru was just another city like Singapore, so I was tired of looking at the crowds of people as they hurried past. As we went beyond the city, I watched the straight rows of rubber trees and miles and miles of green. Then the first village came into sight. Immediately I came alive; I decided to wave back.
From then on my journey became interesting. I threw my magazines into the waste basket and decided to join in Malaysian life. Then everything came alive. The mountains seemed to speak to me. Even the trees were smiling. I stared at everything as if I was looking at it for the first time.
The day passed fast and I even forgot to have my lunch until I felt hungry. I looked at my watch and was surprised that it was 3:00 pm. Soon the train pulled up at Butterworth. I looked at the people all around me. They all looked beautiful. When my uncle arrived with a smile, I threw my arms around him to give him a warm hug (擁抱). I had never done this before. He seemed surprised and then his weather-beaten face warmed up with a huge smile. We walked arm in arm to his car.
I looked forward to the return journey.
小題1: The author expected the train trip to be________ .
A.a(chǎn)dventurousB.pleasantC.excitingD.dull
小題2: What did the author remember most fondly of her train trip?
A.The friendly country people.B.The mountains along the way.
C.The crowds of people in the streets.D.The simple lunch served on the train.
小題3: Which of the following words can best take the place of the word "relish" in the second paragraph?
A.chooseB.enjoyC.prepare forD.carry on
小題4: Where was the writer going?
A.Johore BaruB.The Causeway.C.ButterworthD.Singapore
小題5: What can we learn from the story?
A.Comfort in traveling by train.B.Pleasure of living in the country.
C.Reading gives people delight.D.Smiles brighten people up.

查看答案和解析>>

科目:高中英語 來源: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 來源:不詳 題型:閱讀理解

The iPhone, the iPad, the iPod, each of apple's products sounds cool and has become a pad (一時的風(fēng)尚). Apple has cleverly taken advantage of the power of the letter “i”,-- and many other brands are following suit. The BBC’s iPlayer —which allows Web users to watch TV programs on the internet—adopted the title in 2008. A lovely bear—popular in the US and UK—that plays music and video is called “iTeddy”.A slimmed-down version of London’s Independent newspaper,was launched last week under the name “i”.
In general,single-letter prefix have been popular since the 1990s,when terms such as e-mail and e-commerce first came into use.
Most “i”products are targeted at young people and considering the major readers of the Independent’s “i”,it’s no surprise that they’ve selected this fashionable name.
But it’s hard to see what’s so special about the letter “i”.Why not use “a”,“b”or “c”instead?According to Tony Thorne,head of Language Center at King’s College,London,“i”works because its meaning has become ambiguous .When Apple uses “i”,no one knows whether it means internet,information,individual or interactive,Thorne told BBC magazines “even when Apple created the iPod,it seems it didn’t have one clear definition,”he says.
“However,thanks to Apple,the term is now associated with portability (輕便), ”adds Thorne.
Clearly the letter “i”also agrees with the idea that the Western World is centered on the individual. Each person believes they have their own needs,and we love personalized products for this reason.
Along with “Google”and “blog”,readers of  BBC magazines voted “i”as one of the top 20 words that have come to define the last decade.
But as history shows,people grow tired of fads. From the 1900s to the 1990s,products with “2000”in their names became fashionable as the year was associated with all things advanced and modern. However,as we entered the new century,the trend inevitably disappeared.
小題1:
We can infer that the Independent’s “i”is aimed at _______.
A.young readersB.old readersC.fashionable womenD.engineers
小題2:

查看答案和解析>>

科目:高中英語 來源: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>>

同步練習(xí)冊答案