In a little-known part of the counter-terrorism（反恐怖主義） world, one of the most effective detection systems is a 600-pound animal that works for about 20 pounds of fish a day.
Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions to detect sea mines and swimmers, to recover inert torpedoes（魚雷）and to test objects used in Naval exercises.
Program officials estimate that the sea lions in the Marine Mammal Program have recovered millions of dollars of U.S. Naval torpedoes and instrumentation dropped on the sea floor.
The U.S. Navy kept its Marine Mammal Program a secret until the 1990s, and this spring CNN became one of only a handful of media outlets to see firsthand how the program works.
The program has trained about 75 Pacific bottlenose dolphins, with natural biosonar (生物聲納) that tracks better than any manmade device; and 35 California sea lions, with superb underwater eyesight.
Not only do these trained marine mammals track and retrieve millions of dollars in U. S. military equipment, they are also helping to save lives.
The Navy won't disclose whether the dolphins and sea lions have effectively intercepted （阻攔）terrorists attempting to do harm to any U.S. facilities.
"Either way, it serves as a deterrent（阻礙） effect." says Christian Harris, operations supervisor for the program. The mammals can be deployed（調(diào)動(dòng)） via C-130 cargo aircraft to perform their missions anywhere in the world within 72 hours. They have been used in exercises from Alaska to Hawaii, operating in great temperature and environmental ranges. They also have the capability to operate off vessels.
Dolphins most recently were deployed in the Iraq war, performing mine detection and clearance operations in the Persian Gulf to ensure safe passage for humanitarian ships delivering aid. Some of these Iraq war "veterans" are now back home, tasked with a new mission: guarding nuclear submarines in their homeports of Bremerton, Washington, and Groton, Connecticut.
小題1:The underlined word "retrieve" in Paragraph 6 can be replaced by ________.
A．find outB．recoverC．saveD．detect
小題2:Which is NOT the purpose of the Marine Mammal Program?
A．To detect sea mines and swimmers.
B．To save lives of people.
C．To recover inert torpedoes.
D．To help the U.S. Naval test equipment.
小題3:What can be inferred according to the text?
A．These trained marine mammals eat pounds of fish a day.
B．The U.S. Navy performed the Marine Mammal Program for about 30 years secretly.
C．These mammals can carry out a task everywhere.
D．A lot of countries will train dolphins and sea lions for anti-terrorism.
小題4:What would be the best title for the passage?
A．The Special Skills of Marine MammalsB．The U.S. Anti-terrorism Program
C．Exceptional Anti-terrorism MemberD．Trained Marine Mammals

小題１:B
小題２:B
小題３:B
小題４:C

試題分析：可愛乖巧的海豚和海獅充當(dāng)高效反恐先鋒(pioneer)，成為美國反恐大軍中的佼佼者。它們不僅可為美國海軍減少巨額損失，同時(shí)還能幫助救贖生命。
小題１:通過上下文可知“retrieve”有“get sth back”之意。在第三段“...have recovered millions of dollars of U．S. Naval torpedoes...”中“recover”剛好符合此意。選B。
小題２:見第二段。“to save lives of people”是執(zhí)行該計(jì)劃產(chǎn)生的結(jié)果，而非目的。選B。小題３:由第二段“Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions”及第四段“The U．S. Navy kept its Marine Mammal Program a secret until the 1990s”可知美國海軍秘密進(jìn)行該計(jì)劃大約30年。選B。
小題４:主旨題：從文章的第一二段的內(nèi)容可知：美國在訓(xùn)練海豚和海獅充當(dāng)高效反恐先鋒。選Ｃ。
點(diǎn)評：文章內(nèi)容有些難度，但題目主要考查了細(xì)節(jié)題，只要帶著題目到文中找到關(guān)鍵的句子，就可以得到答案，同時(shí)要注重綜合語言能力的運(yùn)用，結(jié)合語境，做出準(zhǔn)確的判斷。
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：閱讀理解

The earth is not the only body that travels around the sun. With it are eight other planets, fellow members of the sun’s family.
Two of them, Mercury (水星) and Venus, are nearer while the other six, namely Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, also in their given order from the sun, are farther from the sun than the earth is. The farther they are, the longer trips they make around the sun. People noticed long ago that these traveling bodies moved around in the sky in definite paths. It is a force called gravity that holds them in their paths.
We know that every little bit of matter in the universe pulls upon every other bit of matter. The pull between two bodies is proportional (成比例的) to the product of their masses. Because the sun is so large the pull between the sun and the planets are thus great. If it were not for this pull, the planets would fly off into space. In the same way there exists a pull between the earth and the moon, which keeps the moon traveling in its orbit around our planet, the earth. Gravity holds you to its surface, and pulls back to it the ball which you throw into the air. Of course the ball also pulls on the larger earth but the earth is so much larger that the pull is not noticed.
Now remember that large bodies exert a greater pull than smaller ones which contain less material. But each object in the universe, no matter how small, pulls on all other objects to some degree.
小題1:There are ________ that travel around the sun in the sun’s family.
A．nine planetsB．eight planets
C．one star and ten planetsD．the earth and the sun
小題2:Which two planets make the longest trips around the sun among all the planets in the solar system?
A．Mercury and Venus.B．Neptune and Pluto.
C．Saturn and Uranus.D．Mars and Jupiter.
小題3:From the passage we can see__________
A．a(chǎn)ll the objects, big or small, must exert the same pull on one another
B．large objects exert the same pull on anybody as small objects
C．small objects exert the same on large ones
D．each object in the universe exerts a pull on all other objects
小題4:From the sentence “The pull between two bodies is proportional to the product of their masses.” We can infer that the pull between__________
A．the sun and the moon is greater than between the sun and the earth
B．the earth and the moon is greater than that between the sun and the earth
C．the sun and the earth is greater than that between the earth and the moon
D．the sun and the earth is the same as that between the earth and the moon

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Scientists from South Korea are trying to convert（轉(zhuǎn)化）sound waves into electricity. The research could lead to charging a cell phone from a conversation or providing energy to the nation’s electricity system generated（產(chǎn)生）by the noise during rash-hour traffic.
“Just as speakers transform electrical signals into sound, the opposite process —turning sound into a source of electrical power — is possible,” said Young Jun Park and Sang-Woo Kim, the joint authors of a new article in the journal Advanced Materials.
Harvesting energy from phone calls and passing cars is based on materials known as piezoelectrics. When bent, piezoelectric materials turn that mechanical energy into electricity. Lots of materials are piezoelectric: cane sugar, quartz （石英）and even dried bone which could create an electrical charge when stressed. For decades, scientists have pumped electricity into piezoelectric materials for use in environmental sensors, speakers and other devices.
Over the past few years, however, scientists have made dramatic advances in getting electricity out of piezoelectric devices. In an experiment, by using sound waves, which at 100 decibels（分貝）were not quite as loud as a rock concert （a normal conversation is about 60-70 decibels）, the South Korean scientists produced a mild electrical current of about 50 millivolts（毫伏）. The average cell phone requires a few volts to function, several times the power this technology can currently produce.
“But the real question is whether there is enough surrounding noise to act as a power source as for a cell phone,” said McAlpine, a leading scientist. A consumer probably wouldn’t want to attend a rock concert or stand next to a passing train to charge his cell phone. The South Korean scientists agree but they expect to get a higher power output as they continue their work.
小題1:According to the two South Korean scientists, ________.
A．sound waves can travel faster than electricity
B．new materials can send cell phone signals better
C．using cell phones adds to heavy traffic in rush hour
D．electricity and sound can be transformed into each other
小題2:We know from the passage that piezoelectric materials ________.
A．can produce electricity when stressed
B．a(chǎn)re good at changing electricity into sound
C．can reduce the noise of passing cars
D．have been widely used in phones and cars
小題3:It can be inferred from the South Korean scientists’ experiment that ________.
A．it is hard to change sound into electricity under current conditions
B．it is impossible to make use of loud sound
C．the technology has a long way to go to have a practical use
D．the technology can power cell phones easily
小題4:What McAlpine doubts about the technology is ________.
A．the noise pollutionB．the sound resource
C．the cost of piezoelectricsD．the safety of devices

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Many people go to school for an education. They learn languages, history, politics, geography, physics, chemistry and mathematics. Others go to school to learn a skill so that they can make a living. School education is very important and useful. Yet, no one can learn everything from school. A teacher, no matter how much he knows, can not teach his students everything they want to know. The teacher’s job is to show his students how to learn. He teaches them how to read and how to think. So, much more is to be learned outside school by the students themselves.
It is always more important to know how to study by oneself than to memorize some facts or a formula(公式). It is actually quite easy to learn a certain fact in history or a formula in mathematics. But it is very difficult to use a formula in working out a math problem. Great scientists before us didn’t get everything from school .Their teachers only showed them the way. Edison did not even finish primary school. But they were all so successful. They invented so many things for mankind. The reason for their success is that they knew how to study. They read books that were not taught at school . They would ask many questions as they read. They did thousands of experiments. They worked hard all their lives, wasting not a single moment. Above all , they knew how to use their brain.
小題1: To work out a math problem, you need to know __________.
A．only a certain formula
B．how to memorize some facts
C．only some facts
D．the method to work it out
小題2: Why were many scientists so successful?
A．They received good education.
B．They were very clever.
C．They knew how to learn.
D．They learned lots of facts and formulas.
小題3:How did great scientists study?
A．They read a lot of books and asked many questions while reading.
B．They did thousands of experiments.
C．They always worked hard and never wasted time.
D．All of the above.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Next Stop: Planet Mars
Fly me to the moon? That’s not far enough. On September 14, 2011, NASA released designs for a superrocket, the Space Launch System (SLS). This time the final destination will be Mars.
The SLS is a huge, liquid-fuelled rocket. If it is fully developed, it will be the most powerful rocket ever built. Its lift capability will be much bigger than that of the space shuttle of Saturn 5, the rocket that sent the Apollo missions to the moon.
NASA is planning to launch its first unmanned test flight in 2017. It is hoped that the first crew will fly in 2021 and astronauts will make it to a nearby asteroid(小行星) in 2025. NASA hopes to send the rocket and astronauts to Mars from the asteroid by the 2030s, according to the Associated Press (AP).
NASA used liquid rockets to send Apollo, Gemini and Mercury into space, but later changed to solid rockets boosters(助推火箭) because they were cheaper. Tragically, however, a booster flaw(缺陷) caused the space shuttle Challenger to crash in 1986. The new project plans to return to liquid fuel.
According to AP, the rockets will at first be able to carry 77 to 110 tons of payload(凈載重量). Eventually they will be able to carry 143 tons into space, maybe even as many as 165 tons, NASA officials said. By comparison, the Saturn 5 booster could lift 130 tons and the space shuttle just 27 tons.
However, unlike reusable shuttles, these powerful rockets are mostly one use only. New ones have to be built for every launch. This will be very costly.
NASA estimates that it will cost about $3 billion (19 billion yuan) per year, or $18 billion until the first test flight in 2017. NASA hopes to make money by allowing private companies to send astronauts to the International Space Station like giant taxi services, so that the program can be “sustainable”.
“This is perhaps the biggest thing for space exploration in decades,” said Senator Bill Nelson, a former astronaut. “The goal is to fly humans safely beyond low-Earth orbit(軌道) and deep into outer space where we cannot only survive, but one day also live.”
小題1:What is the outstanding feature of the SLS?
A．It’s equipped with an advanced control system.
B．It’s the first unmanned space shuttle in the world.
C．It’s the only vehicle that can fly astronauts to the moon.
D．It can send a lot more goods and passengers into space.
小題2:What is Saturn 5?
A．An aircraft that had a deadly flaw and crashed in 1986.
B．A series of rockets that once sent astronauts to the moon.
C．An unmanned space shuttle that was once famous in the world.
D．A kind of launch vehicle that will be used to carry astronauts to Mars.
小題3:NASA plans to use liquid fuel in the new project because ______ than solid rockets boosters.
A．it is less costly
B．it is much safer
C．it can last longer
D．it is more environmentally friendly
小題4:According to NASA’s schedule, it will take ______ years to fully complete the SLS program.
A．a(chǎn)bout 6B．a(chǎn)bout 10
C．less than 14 D．more than 19
小題5:It can be inferred from the passage that ______.
A．the SLS program is planning to make reusable rockets
B．the goal of the SLS program is to enable humans to live on the moon
C．the US government may not have provided enough money for the SLS program
D．NASA will use SLS as a space taxi between the Earth and Mars

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Do you want to live forever? By the year 2050, you might actually get your wish — if you are willing to leave your biological body and live in silicon circuits （半導(dǎo)體電路）．But long before then, perhaps as early as 2020, some measures will begin offering a semblance of immortality （虛擬的永生）.
Researchers are confident that technology will soon be able to track every waking moment of your life. Whatever you see and hear, all that you say and write, can be recorded, analyzed and added to your personal chronicles （履歷）. By the year 2030, it may be possible to catch your nervous systems through electrical activities, which would also keep your thoughts and emotions.
Researchers at the laboratories of British Telecommunications have given the name of this idea as Soul Catcher. Small electronic equipment will make preparation for Soul Catcher. It would use a wearable supercomputer, perhaps in a wristwatch, with wireless links to micro sensors under your scalp（頭皮） and in the nerves that carry all five sensory signals. So wearing a video camera would no longer be required.
At first, the Soul Catcher's companion system — the Soul Reader — might have trouble copying your thoughts in complete details. Even in 2030, we may still be struggling to understand how the brain is working inside, so reading your thoughts and understanding your emotions might not be possible. But these signals could be kept for the day when they can be transferred to silicon circuits to revitalize minds everlasting entities （永生實(shí)體）. Researchers can only wonder what it will be like to wake up one day and find yourself alive inside a machine．
For people who choose not to live in silicon, semblance of immortality would not be as useless as they thought. People would know their lives would not be forgotten, but would be kept a record of the human race forever. And future generations would have a much fuller understanding of the past. History would not be controlled by just the rich and powerful, Hollywood stars, and a few thinkers in the upper society.
小題1:The main idea of this passage is that _______．
A．human beings long for living forever
B．there are many difficulties in making the Soul Catcher
C．people might live forever as technology develops
D．the invention of Soul Catcher has great importance
小題2:According to this passage, a Soul Catcher will be ______．
A．a(chǎn) new machine on which research measures have already been made
B．a(chǎn) new invention in order to catch and keep human's thoughts and emotions
C．made by British scientists to offer something that looks like living forever
D．made of silicon circuits which can catch people's nervous activity
小題3:According to the writer, semblance of immortality is ______．
A．to be a reality sooner or laterB．far from certain
C．just an idea that couldn't t be realized at allD．a(chǎn) fading hope
小題4:The meaning of the underlined word "revitalize" in the fourth paragraph is close to        .
A．make deadB．make famous C．make knownD．make active

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

In 1990 a report was published about what the earth might be like 20 years from then on. The report was a result of a three-year  36 .?
According to the report, the picture of the earth in the year 2010 is not a  37  one. The world will be more  38  because the population will continue to grow . The population could be  39  6 300 million, almost 2 115 million more than in 1985 .More people would move into cities, especially cities in  40  countries . Cities like Cairo and Jakarta probably would  41  have 15 million by then .
Food production will  42  , but not enough to feed all the people . Farmers will grow 90% more food than they did in 1985,  43  most of the increase would be in countries that
 44  produce enough food for their people . Little increase is  45  in South Asia, Africa and the Middle East . Poor farming ways are 46  large areas of crop land, changing farms into deserts . More farmland is  47  as cities become larger and more houses are built . 48  will get worse as industrial countries burn more coal and oil .?Many of the world’s  49  could disappear as more and more trees are cut down . Energy will continue to be a serious problem . The experts say their picture of the earth for the year 2010  50  . They only carried out the situation that  51  today . By changing the situation, by  52  the problems, the picture can be changed . There is  53  time for the nations of the world to work  54  a plan of action . But they warned that  55  too long to make decisions would greatly reduce the chances of success .?
小題1:
A．learningB．projectC．noticeD．study
小題2:
A．pleasedB．pleasantC．safeD．blue
小題3:
A．dangerousB．beautifulC．crowdedD．terrible
小題4:
A．no more thanB．a(chǎn)s many asC．a(chǎn)s much asD．a(chǎn)s large as
小題5:
A．developingB．developedC．bigD．mountainous
小題6:
A．noneB．eachC．a(chǎn)llD．neither
小題7:
A．insistB．reduceC．increaseD．continue
小題8:
A．soB．butC．orD．however
小題9:
A．a(chǎn)lreadyB．hardlyC．partlyD．never
小題10:
A．wantedB．lackedC．foundedD．expected
小題11:
A．destroyingB．protectingC．disturbingD．interrupting
小題12:
A．savedB．lostC．discoveredD．used
小題13:
A．Air pollutionB．Water pollutionC．Some diseasesD．All farmland
小題14:
A．AnimalsB．plantsC．forestsD．people
小題15:
A．must be trueB．will come trueC．can’t be trueD．may be wrong
小題16:A. happens       B develops          C .exists            D. appears
小題17:
A．settlingB．working atC．a(chǎn)nsweringD．dealing
小題18:
A．noB．stillC．lessD．plenty of
小題19:
A．a(chǎn)boutB．inC．outD．for
小題20:
A．workingB．suggestingC．spendingD．waiting

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

That morning, I stepped into the classroom, ready to share my knowledge and experience with seventy-five students who would be my English Literature class. Having taught in  1 for seventeen years, I had no  2  about my ability to hold their attention and to  3  on them my admiration for the literature of my mother tongue.
I was shocked when the monitor shouted, "  4  !" The entire class rose as I entered the room, and I was somewhat  5  about how to get them to sit down again, but once that awkwardness was over, I quickly  6  my calmness and began what I thought was a fact-packed lecture, sure to gain their respect—perhaps  7  their admiration. I went back to my office with the rosy glow which came from a sense of achievement.
My students  8  diaries. However, as I read them, the rosy glow was gradually  9  by a strong sense of sadness. The first diary said, "Our literature teacher didn’t teach us anything today.  10  her next lecture will be better." Greatly surprised, I read diary after diary, each expressing a  11  theme. "Didn’t I teach them anything? I described the entire philosophical framework of Western thought and laid the historical  12  for all the works we’ll study in class," I complained." How _13  they say I didn’t teach them anything?"
It was a long term, and it  14  became clear that my ideas about education were not the same as_15 of my students. I thought a teacher’s job was to raise   16  questions and provide enough background so that students could  17 their own conclusions. My students thought a teacher’s job was to provide _18_ information as directly and clearly as possible. What a difference!
_19 , I also learned a lot, and my experience with my Chinese students has made me a  20  American teacher, knowing how to teach in a different culture.
小題1:
A．the UK B．the US C．China D．Australia
小題2:
A．worryB．idea C．doubt D．experience
小題3:
A．impress B．put C．leave D．fix
小題4:
A．Attention B．Look out C．At ease D．Stand up
小題5:
A．puzzledB．sure C．curiousD．worried
小題6:
A．found B．returned C．regainedD．followed
小題7:
A．moreB．even C．yet D．still
小題8:
A．passed B．borrowed C．read D．kept
小題9:
A．replaced B．taken C．caught D．moved
小題10:
A．Naturally B．Perhaps C．Fortunately D．Reasonably
小題11:
A．different B．strong C．similarD．usual
小題12:
A．happenings B．characters C．development D．background
小題13:
A．should B．need C．will D．must
小題14:
A．immediately B．certainly C．simply D．gradually
小題15:
A．that B．what C．those D．ones
小題16:
A．difficult B．interesting C．ordinary D．unusual
小題17:
A．draw B．look C．search D．offer
小題18:
A．strange B．standard C．exact D．serious
小題19:
A．Therefore B．However C．Besides D．Though
小題20:
A．normal B．happy C．good D．better

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

My grandson is seven now. He lives 100 miles away. He  36 my mobile phone number when he was only four.  37 , he has called me every night.
He also  38  calls me at other times during the day just to  39  a happy or sad moment. Many times he is holding a basketball with one hand, or  40  with a friend about something I don’t quite  41 , or crying about something. I just  42  and laugh or cry with him — just share his emotion. I always let him be in  43  of the conversation, the emotion, and the amount of time he’s on the  44  with me. Many times I just listen to him  45  or listen while he does his homework aloud.
The  46  time I take control of the conversation is when he’s  47  to say goodbye at night. Then I say, “I love you, baby”. One  48  I thought maybe he was  49  of hearing those words, so I didn’t say them. He immediately called me back and told me that I  50  to say the sentence! Since then I have never  51  saying it again!
All my friends know he takes precedence over (比……重要) all other things. If I’m at a place where I really can’t take his  52 , I always excuse myself and  53  tell him I’ll call him back in a few minutes. I want him to know that he takes first place in my  54 .
Every child needs at least one  55  in their life to listen and share with. I am glad to give my grandson the love he needs.
小題1:
A．memorizedB．keptC．noticedD．wrote
小題2:
A．Once againB．Since thenC．Later onD．Shortly after
小題3:
A．briefly B．directly C．instantly D．frequently
小題4:
A．express B．discuss C．shareD．mark
小題5:
A．comparing B．laughingC．studying D．quarrelling
小題6:
A．understandB．enjoyC．believe D．remember
小題7:
A．look B．talk C．sit D．listen
小題8:
A．charge B．need C．support D．face
小題9:
A．conversationB．phoneC．wayD．game
小題10:
A．play B．sleepC．lieD．a(chǎn)ct
小題11:
A．lastB．only C．perfectD．right
小題12:
A．willing B．determinedC．ready D．eager
小題13:
A．dayB．night C．weekend D．morning
小題14:
A．a(chǎn)fraid B．tiredC．a(chǎn)ware D．a(chǎn)shamed
小題15:
A．decided B．learnt C．a(chǎn)greed D．forgot
小題16:
A．escaped B．failed C．missedD．denied
小題17:
A．invitation B．callC．help D．a(chǎn)ttention
小題18:
A．naturallyB．politely C．simply D．happily
小題19:
A．workB．brainC．a(chǎn)ppointment D．heart
小題20:
A．friendB．grandparentC．a(chǎn)dultD．teacher

查看答案和解析>>

同步練習(xí)冊答案