Scientists in Canada say big ocean fish have almost disappeared from the world since the start of industrial fishing in the nineteen-fifties. The scientists found that population of large fish like tuna; swordfish and cod have dropped by ninety percent in the past fifty years.
The study took ten years. The researchers gathered records from fishing businesses and governments around the world. The magazine Nature published the findings.
The scientists say the common method called longline fishing is especially damaging to populations of large fish. This method involves many fishing lines connected to one boat. These wires can be close to one-hundred kilometers long. They hold thousands of sharp metal hooks to catch fish.
Longline fishing is especially common in the Japanese fishing industry. Records showed that Japanese boats used to catch about ten fish for every one-hundred hooks. The study says longline fishing boats now might catch one fish per hundred hooks.
The scientists say industrial fishing can destroy groups of fish much faster than in the past. The study suggests that whole populations can disappear almost completely from new fishing areas within ten to fifteen years.
Ransom Myers of Dalhousie University in Nova Scotia led the study with Boris Worm of Dalhousie and the University of Kiel in Germany. Mister Worm says the destruction could lead to a complete re-organization of ocean life systems. Mister Meyers says the decreased number of large fish is not the only worry. He says even populations that are able to reproduce do not get the chance to live long enough to grow as big as their ancestors(祖先). He says not only are there fewer big fish, they are smaller than those of the past.
American government scientists say even with the best efforts to protect fish populations, decreases are to be expected.
小題1:Where is the passage probably taken from?
A.A story book.
B.A business magazine.
C.An environment report.
D.An economic survey.
小題2:Big fish have gradually been disappearing especially because ________.
A.longline fishing method is used
B.sea water is getting polluted
C.mankind destroys the environment
D.governments don’t make the best efforts
小題3:Which of the following shows the fact that the populations of large fish have dropped?
A.Today’s “l(fā)arge”fish are smaller than those of the past.
B.Longline boats now might catch fewer fish every one-hundred hooks.
C.Fish even able to reproduce don’t have the chance to live longer.
D.Japanese boats could catch about ten fish for every 100 hooks.
小題4:What can be the best title?
A.Discoveries Canadian Scientists Have Made
B.Japanese Fishing Industry
C.Losses of Big Fish
D.Modern Fishing Methods
小題5:When did the researchers begin to survey the decreasing of large fish?
A.In the 1960s.B.In the 1970s.C.In the 1980s.D.In the 1990s.

小題1:C
小題2:A
小題3:D
小題4:C
小題5:D
文章主要討論的就是大型魚類的消失的原因
小題1:C 推理題。本文是關(guān)于海洋中大型魚類越來越少,說明這是一個(gè)關(guān)于野生動物環(huán)境報(bào)告。
小題2:A 細(xì)節(jié)題。根據(jù)第三段1,2行The scientists say the common method called longline fishing is especially damaging to populations of large fish.可知A正確。
小題3:D 細(xì)節(jié)題。根據(jù)第四段2,3行Japanese boats used to catch about ten fish for every one-hundred hooks. The study says longline fishing boats now might catch one fish per hundred hooks.可知D正確。
小題4:C 主旨大意題。文章主要討論的就是大型魚類的消失的原因,故C正確。
小題5:D 計(jì)算題。根據(jù)第二段The study took ten years.現(xiàn)在里現(xiàn)在10多年,那么應(yīng)該是在20世紀(jì)90年代開始的,故D正確。
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

The teacher thought hobbies were very important for every child. She  36  all her pupils to have one, and sometimes  37  for their parents to come and see the work they had done as a result.
One Friday  38  the teacher told the class that those who had a hobby could have a  39  that afternoon to get the things they had made as parts of their hobbies ready for their  40  to see the following afternoon.
So in the afternoon, while those of the pupils who had nothing to  41  did their usual lessons, the lucky ones who had made something  42  to go home, on condition that they  43 before five o'clock to bring what they were going to show and to arrange it.
When the afternoon lesson began, the teacher was  44  to see Tommy was not there. He was the  45  boy in the class, and the teacher found it  46  to believe he had a hobby. However, at 4:45, Tommy arrived with a(n)  47  collection of butterflies in glass cases. After his  48  had admired them and helped him to arrange them on a table in the classroom, she was surprised to see Tommy  49  them up again and begin to leave.
"What are you doing, Tommy?" she asked. "Those things must  50  here until tomorrow afternoon. That's when the parents are coming to see them."
"I know  51 ," answered Tommy, "and I will bring them back tomorrow; but my  52  doesn't want them to be out of our house at night in case they are  53 ."
"But what has it got to do with your brother?" asked the teacher. "Aren't the butterflies yours?"
"No," answered Tommy. "They belong to him."
"But Tommy, you are  54  to show your own hobby here, not somebody else's!" said the teacher.
"I know that," answered Tommy. "My hobby is  55  my brother collecting butterflies."
小題1:
A.stoppedB.orderedC.encouragedD.a(chǎn)greed
小題2:
A.a(chǎn)rranged B.a(chǎn)skedC.lookedD.waited
小題3:
A.a(chǎn)fternoonB.eveningC.night D.morning
小題4:
A.testB.lessonC.competitionD.holiday
小題5:
A.teachersB.parentsC.friendsD.classmates
小題6:
A.presentB.doC.seeD.eat
小題7:
A.had B.usedC.were madeD.were allowed
小題8:
A.turned outB.returnedC.leftD.finished
小題9:
A.sadB.happyC.frightenedD.surprised
小題10:
A.laziestB.most curiousC.cleverestD.youngest
小題11:
A.difficultB.easyC.reliableD.disable
小題12:
A.uglyB.smallC.beautifulD.obvious
小題13:
A.classmatesB.brotherC.fatherD.teacher
小題14:
A.throwB.pick C.switchD.use
小題15:
A.remain B.leaveC.observeD.undertake
小題16:
A.themB.himC.thatD.this
小題17:
A.sisterB.friendC.brotherD.mother
小題18:
A.stolenB.shownC.completedD.matched
小題19:
A.firedB.supposedC.relatedD.ignored
小題20:
A.helpingB.concerningC.watchingD.Seeking

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Psychologists(心理學(xué)家) have known that what's going on inside our head affects our senses. For example, poorer children think coins are larger than they are, and hungry people think pictures of food are brighter. Professor Remi Radel wanted to investigate(look into) how this happens -- whether it's right away, as the brain receives signals from the eyes, or a little later, as the brain's higher-level thinking processes get involved.
Radel chose 42 students and each student was told to arrive at the lab at noon after three or four hours of not eating on the day of the test. Then they were told there was a delay. Some were told to come back in 10 minutes; others were given an hour to get lunch. So half the students were hungry when they did the experiment and the other half had just eaten.
For the experiment, the participant looked at a computer screen. One by one, 80 words flashed on the screen. A quarter of the words were food-related. After each word, the person was asked how bright the word was and asked to choose which of two words they'd seen -- a food-related word like gateau (cake) or a neutral (中性的) word like bateau (boat).
Hungry people saw the food-related words as brighter and were better at identifying food-related words. Because the word appeared too quickly for them to be reliably seen, this means that the difference is in perception (直覺), Radel says—it's not because of some kind of processing happening in the brain after you've already figured out what you're looking at.
"This is something great to me, that humans can really realize what they need or what they hope for, to know that our brain can really arrange for our motives and needs," Radel says. "There is something inside us that selects information in the world to make life easier.”
小題1:The purpose of Radel's research is to let us know ____.
A.how our thinking has effect on our senses happens
B.what it is the good time for students to have lunch
C.whether poorer children think coins are larger than they are
D.whether hungry people think pictures of food are brighter
小題2:In the experiment 20 words that flashed on the screen had something to do with “____”.
A.boatB.food C.mind D.weather
小題3:Which of the following is true about the experiment?
A.The students should stare at the words in the book.
B.Each word appeared slowly in order that the participant could read it exactly.
C.After each word flashed on the screen, the person was asked to finish two tasks.
D.On the day of the test, all the students were very hungry because of the delay of their lunch.
小題4:What does the new study find?
A.Actually our brain can arrange for our motives and needs.
B.In the experiment the brain was totally controlled by the senses.
C.People who had just eaten saw all the words more clearly than hungry people.
D.The participants saw the words look different long after the brain dealt with the information.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:完形填空

The Internet has opened up a whole new online world for us to meet, chat and go where we’ve never been before.
But just as in face to face communication, there are some rules of behavior that should be followed when on line.   71  Imagine how you’d feel if you were in the other person’s shoes.
For anything you’re about to send: ask yourself, “Would I say this to the person’s face?” if the answer is no, rewrite and reread.   72 
If someone in the chat room is rude to you, your instinct (本能) is to fire back in the same manner. But try not to do so.    73  If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room.
   74  Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it’s a stupid question or an unnecessarily long answer, be kind about it. If it’s a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn’t give you license to correct everyone else.    75  At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended.
It is not polite to ask others personal questions such as their age, sex and marital status. Unless you know the person very well, and you are both comfortable with sharing personal information, don’t ask such questions.
A.Repeat the process till you feel sure that you’d feel comfortable saying the words to the person’s face.
B.Everyone was new to the network once.
C.The basic rule is simple: treat others in the same way you would want to be treated.
D.When you send short messages to a person online, you must say something beautiful to hear.
E. You should either ignore the person, or use your chat software to block their messages.
F. If you do decide to tell someone about a mistake, point it out politely.
G. It’s natural that there some people who speak rudely or make mistakes online.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

A villa (別墅) designed to resist earthquakes with “self-healing” cracks in its walls, thanks to nanotechnology (納米技術(shù)) applications with self-healing polymers (聚合物), is to be built on a Greek mountainside. The villa’s walls will include special particles that turn into a liquid when squeezed (壓榨) under pressure, flow into cracks, and then harden to form a solid material.
The NanoManufacturing Institute (NMI), based in Leeds University, will play a key role in an EU project to construct the home by December 2010. The project, called “Intelligent Safe and Secure Buildings” (ISSB) is funded under the EU’s Sixth Framework program. This potentially life-saving scheme is led by German building manufacturer Knauf. The villa will be built in Amphilochia, in western Greece, where Knauf currently runs a manufacturing plant. If the experiment is successful, more tremor-resistant(防震)homes could be built in earthquake zones across the globe. NMI chief executive Professor Terry Wilkins said, “What we’re trying to achieve here is very exciting. We’re looking to use polymers in much tougher situations than ever before on a larger scale.” Monitors contained in the villa’s walls will be able to collect vast amounts of data about the building over time. Wireless sensors(傳感器) will record any stresses and vibrations, as well as temperature, humidity and gas levels.
The walls are to be built from new load-bearing steel frames and high-strength gypsum(石膏)board. Prof Wilkins said, “If there are any problems, the intelligent sensor network will be able to alert residents immediately so they have time to escape. If whole groups of houses are so constructed, we could use a larger network of sensors to get even more information. If the house falls down, we have got hand-held devices that can be used over the ruins to pick out where the embedded(嵌入的)sensors are hidden to get some information about how the villa collapsed. Also, we can get information about anyone who may be around, so it potentially becomes a tool for rescue.”
小題1:The aim of the passage is to ________.
A.report a piece of interesting news
B.promote tremor-resistant homes
C.inform us of the nanotechnology development
D.tell us something about a tremor-resistant home
小題2:The villa can resist earthquakes because _______.
A.it will be built on a special place
B.the cracks in its walls can be healed by the polymers
C.the special particles can make its walls stronger
D.the intelligent sensor network can tell people where there is a crack
小題3:If the tremor-resistant home falls down, _______.
A.rescue work can be done more quickly and accurately
B.the intelligent sensor network will stop working
C.no one can be hurt in the earthquake
D.a(chǎn) warning signal will be given to other residents
小題4:What Prof Wilkins said suggests that _______.
A.he is doubtful about the project
B.he thinks the tremor-resistant home is perfectly designed
C.he is confident in the tremor-resistant home
D.the tremor-resistant home still needs to be tested in a real situation
小題5:It can be inferred from the passage that tremor-resistant home _______.
A.is still being tried out
B.is already under construction
C.has been in wide use
D.will be put into wide use soon

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Have you ever thought of such questions as “Why do I have to study math?”or “I am not interested in history at all. My dream is to be an actor. Should I give history up?”
Maybe you are right. After you leave school, it’s not necessary for you to understand everything. But please remember that at school,besides getting knowledge, you should pay attention to some other important things.
First, try to find what you are most interested in. At school, you study many subjects. Try to find what you like and what you don’t like. This may be helpful to you in the future.
Second, maybe you don’t like math and you want to drop it. But the logical thinking ability from math can help you solve some problems.At school, you should practice your brain by thinking.
Third, you should believe in yourself. Maybe you learn French at school, but you don’t need to speak French at all.But learning French can prove that you have the ability of learning languages. Suppose you go to France one day and find a good job well. At school I learned French well, and now I must be able to learn German. But if you have no confidence, what will happen?
Try to challenge yourself as often as possible. I think many of us like playing computer games. When we fail in a game, we always want to try it again. Why? Because it is hard for us to get the highest mark. If we want to challenge ourselves, we must face more difficult things and make greater progress.
小題1:At school you should             .
A.stop learning the subjects you don’t like
B.both get knowledge and improve your ability
C.pay more attention to math and French
D.learn French instead of English
小題2:Math can improve one’s           .
A.logical thinking ability
B.skills in computer
C.interest in other subjects
D.a(chǎn)bility of finding a job
小題3:Which of the following is TRUE?       
A.You will use everything you learn at school in your future job.
B.It’s not necessary to know what you like at school.
C.Everything you learn at school has an influence on you.
D.Logical thinking ability is the most important ability.
小題4:Learning French can help us            .
A.have confidence in learning languages
B.go to France
C.get a good result in the exam
D.make greater progress
小題5:The last paragraph tells us that             .
A.everyone loves to play computer games
B.it is not easy to get high marks in computer games
C.we should do some very different things
D.we should challenge

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

According to US research, it can take up to ten years to become a near-native English speaker. Asian and Spanish students took between five and ten years to reach native speaker performance in English-only schools. Fluency obviously doesn’t happen overnight. But time can definitely make you a better speaker.
After testing his own memory, German psychologist Hermann Ebbinghaus discovered that humans forget most of what they learn in the first 20 minutes.
So cramming right before a speaking exam is not likely to be as effective as practicing regularly over time. The more you practice, the more familiar new words will become. In the classroom, studies have also shown that repeating oral tasks improves a speaker’s performance.
One of the best repetition exercises is the 4/3/2 technique. Speakers give the same talk to three different listeners with a progressive decrease in delivery time, starting at four minutes, then three, and finally two minutes. This exercise has been proven to help learners speak faster. It can also result in less hesitation and more grammatical accuracy. While time dose make a difference when it comes to speaking perfect English, it would not hurt to brush up on your other language skills.
Studies have also shown that reading can increase your speaking vocabulary. After one month of an extensive reading program, a 27-year-old student of French became more familiar with 65 percent of the new words.
Aside from choosing the right learning methods, having certain personality traits may also help. US linguistics expert Stephen Krashen believes those with high motivation, self-confidence and a low level of anxiety are better equipped for speaking success.
Krashen says students who don’t have these qualities are more likely to have a “mental block”. “Even if they understand the message, the input will not reach the part of the brain responsible for language acquisition,” he writes in his book Principles and Practice in second Language Acquisition.
小題1:According to the passage, if you want to be a near-native speaker, you need _____.
A.long-term speaking practice and much reading
B.speaking practice for ten years only
C.long-term speaking practice, much reading and certain qualities
D.cramming new words every day
小題2:The author put forward the 4/3/2 technique just to show that _____.
A.you should speak to 3 different people
B.you should speak to 3 different people at 3 different times
C.it can prevent you from making grammar mistakes
D.it is really a good way to make you a better speaker
小題3:The example of a 27-year-old student of French in the passage mainly means that _____.
A.reading can enlarge your vocabulary for your speaking
B.reading can make you memorize just 65 percent of the new words
C.the 27-year-old student of French is very clever
D.in one month, you can improve your speaking ability
小題4:The underlined phrase “l(fā)inguistics expert” means a person who is quite expert at _____.
A.languagesB.spoken language
C.scientific researchD.teaching English

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

In a growing number of English classes, teachers are leaving the classic novels on the shelf and letting students select the books they read. Supporters say that the new approach, called reader’s workshop, helps develop a love for reading in students who are bored by classic literature. They argue that the best way to motivate students to read more is to offer them more choices.
Not all educators are on the same page, however. They worry that students who choose trendy, less challenging titles over the classics won’t be exposed to the great writing and key themes of important works of literature.Student reporters Donald and Sarah express their ideas about this new approach.
Donald thinks that we should turn the page. Students should be allowed to select the books they read in English class. He says he and his classmates are allowed to pick their own books in class. That makes them more focused, and they look forward to class time. Tristin, a classmate of his at Clinton Middle School agrees. “I’m reading books that I want to read, which makes class more fun and interesting,” he says. Offering students a choice may also improve test scores. Studies by Professor John Guthrie of the University of Maryland found that students in grades 4 through 6 who had some choices in the books they read showed improved reading comprehension skills during testing. Giving students the chance to decide what they read helps build a lifelong love for reading. Isn’t that what we want for our students?
Sarah holds a different view. She thinks teachers know more about books than students do. When an English teacher assigns a book, he or she keeps in mind the reading level of most students in the class. Students who choose their own books might be cheating themselves by picking books that are not up to their reading level or that are too difficult. Furthermore, a whole class can discuss a book it reads together. That makes it easier for some kids to understand what they are reading. “The students wouldn’t be able to hold a meaningful conversation if they were all reading different books,” says Kristin, an English teacher at Fleetwood Area Middle School. “If they read the same book, their conversations would be more in-depth.”
小題1:What’s the meaning of the underlined sentence “Not all educators are on the same page”?
A.Educators have different opinions.
B.Educators didn’t appear at the same time.
C.Educators wrote in different pages.
D.Educators didn’t agree with the author.
小題2:Donald thinks that the new approach could __________.
A.helped students be more focused in class
B.draw students to reading classic novels
C.make students less worried in English class
D.encourage students to red more challenging books
小題3:Sarah thinks that the new approach might __________.
A.help students improve reading comprehension skills
B.help students hold meaningful conversations in class
C.make some students read books not suitable for them
D.make some students ignore the important works of literature
小題4:Who has the same attitude towards the new approach with Kristin?
A.Donald.B.Sarah.C.Tristin.D.John Guthrie.
小題5:The author develops the text mainly by __________.
A.listing cases
B.making comparisons
C.following time order
D.explaining causes and effects

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Have you wondered why different animals or pests have their particular colors? Colors in them seem to be used mainly to protect themselves.
Birds, especially seagulls are very fond of locusts, but birds can’t easily catch locusts because locusts change their colors together with the change of the color of crops. When crops are green, locusts look green. But when crops are ripe, locusts take on exactly the same brown color as crops have. Some other pests with different colors from plants are usually easily found and eaten by their enemies. So they have to hide themselves in terror for lives and appear only at night.
If you study the animal life in any part of the world, you will find the main use of coloring is to protect themselves, bears, wolves and other beasts move quietly through forests. They are usually invisible to the eyes of hunters, because they have the color much like the barks(樹皮) of trees.
An even more strange act remains to be noticed. A kind of fish living in seas can send out a kind of very black liquid when it faces danger. While the liquid is over, its enemies cannot find it, and it quickly swims away. Thus, it has existed up to now though it is not powerful at all.
小題1:This passage mainly talks about ______.
A.the change of color in locusts
B.the protective coloration of animals and pests
C.how a certain sea fish protects itself
D.a(chǎn)nimals or pests can dye themselves different colors
小題2:Locusts are ______ but they aren’t easily wiped out(消滅)by their enemies because _______.
A.a(chǎn)nimals; they are powerful enough
B.beasts; they are dangerous to their enemies
C.pests; they take on the same colors as crops
D.birds; they fly very fast
小題3:What does the underlined word “invisible” in Paragraph 3 mean?
A.can’t be seenB.can be seenC.can’t moveD.can’t change

查看答案和解析>>

同步練習(xí)冊答案