Sharks have lived in the oceans for over 450 million years, long before dinosaurs appeared. There are now about 360 species of sharks, whose size, behavior, and other characteristics differ widely.
Every year, we catch and kill over 100 million sharks, mostly for food and for their fins. Dried shark fins are used to make shark fin soup, which sells for as much as $50 a bowl in fine Hong Kong restaurants. Other sharks are killed for sport and out of fear. Sharks are vulnerable(易受傷的) to overfishing because it takes most species 10 to 15 years to begin reproducing and they produce only a few offspring(后代).
Influenced by movies and popular novels, most people see sharks as people-eating monsters. This is far from the truth. Every year, a few types of shark injure about 100 people worldwide and kill about 25. Most attacks are by great white sharks, which often feed on sea lions and other marine(海洋的) mammals. They sometimes mistake human swimmers for their normal prey, especially if they are wearing black wet suits.
If you are a typical ocean-goer, your chances of being killed by an unprovoked(非受挑釁而發(fā)生的)attack by a shark are about 1 in 100 million. You are more likely to be killed by a pig than a shark and thousands of times more likely to get killed when you drive a car.
Sharks help save human lives. In addition to providing people with food, they are helping us learn how to fight cancer, bacteria, and viruses. Sharks are very healthy and have aging processes similar to ours. Their highly effective immune system allows wounds to heal quickly without becoming infected, and their blood is being studied in connection with AIDS research.
Sharks are among the few animals in the world that almost never get cancer and eye cataracts(白內(nèi)障). Understanding why can help us improve human health. Chemicals taken from shark cartilage(軟骨)have killed cancerous tumors in laboratory animals, research that someday could help prolong your life.
Sharks are needed in the world’s ocean ecosystems. Although they don’t need us, we need them. We are much more dangerous to sharks than they are to us. For every shark that bites a person, we kill one million sharks.
小題1:Which of the following is NOT a reason why people kill sharks?
A.People kill sharks for food.
B.People kill sharks for sport.
C.People kill sharks out of fear.
D.People kill sharks because they often attack swimmers.
小題2:According to the passage, which of the following statements is NOT true?
A.There are many different species of sharks, but only a few of them are dangerous to humans.
B.Sharks never get ill.
C.Sharks are a valuable resource for human.
D.Sharks play an important role in the ocean ecosystem.
小題3:It can be inferred from the passage that _______.
A.movies have given people the wrong impression of sharks
B.most sharks are dangerous to humans
C.sharks will attack anyone who is wearing black
D.it is dangerous to swim in the ocean
小題4:The underlined word “prolong” in the last but one paragraph means ______.
A.saveB.protectC.lengthenD.improve
小題5:The best title for the passage would be _______.
A.Are Sharks Dangerous?B.Sharks And Humans
C.Sharks: Humans’ FriendsD.Sharks Help Save Human Lives

小題1:D
小題2:B
小題3:A
小題4:C
小題5:C

試題分析:文章講的人類捕殺鯊魚的原因,有一部分在于害怕鯊魚,但是鯊魚很少傷害人類,而且對(duì)人類很有益,對(duì)生態(tài)系統(tǒng)也是有幫助的。
小題1:細(xì)節(jié)題:從文章第二段的內(nèi)容可知人們殺死鯊魚是因?yàn)槭澄,運(yùn)動(dòng)和害怕,沒有說是因?yàn)轷忯~經(jīng)常襲擊游泳者。選D
小題2:細(xì)節(jié)題;從第六段的句子:Sharks are among the few animals in the world that almost never get cancer and eye cataracts(白內(nèi)障).可知鯊魚很少得癌癥和白內(nèi)障,但不是說鯊魚就不會(huì)得病。選B
小題3:細(xì)節(jié)題:從第三段的句子:Influenced by movies and popular novels, most people see sharks as people-eating monsters.可知是電影給了人們對(duì)鯊魚的錯(cuò)誤的觀點(diǎn)。選A
小題4:猜詞題:從前面的句子:Chemicals taken from shark cartilage(軟骨)have killed cancerous tumors in laboratory animals,鯊魚軟骨里面的化學(xué)物質(zhì)可以殺死癌細(xì)胞,可知是延長(zhǎng)人的壽命。選C
小題5:主旨題:文章講的是鯊魚很少傷害人類,而且對(duì)人類很有益,對(duì)生態(tài)系統(tǒng)也是有幫助的,也就是鯊魚—是我們的朋友。選C
點(diǎn)評(píng):文章講的人類捕殺鯊魚的原因,有一部分在于害怕鯊魚,但是鯊魚很少傷害人類,而且對(duì)人類很有益,對(duì)生態(tài)系統(tǒng)也是有幫助的。做這類短文要加強(qiáng)整體意識(shí),把握文章的主要內(nèi)容。在閱讀的時(shí)候可給段落標(biāo)上序號(hào),并給重要的句子和關(guān)鍵詞做上記號(hào),尤其是各段中心句,為答題提供更快捷更多的信息源。
練習(xí)冊(cè)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

We use an average of 158 liters of water a day in Britain, for which we pay a bargain price of 28p a liter, but much of this is just cash down the drain, according to water companies.
Most are campaigning to cut the amount we use. And the frontline weapon in their campaign is the water meter (計(jì)量器). They want us all to have one and one company is seeking powers to make this compulsory.
The Government is anxious for us to use less water, too. Elliot Morley, the Environment Minister, says he is impressed by the savings when a meter is installed. In most homes, consumption drops by 20 percent.
He also thinks consumers get a good deal from meters. He said, “Most people would find that they would either be exactly the same or better off with water meters and it is a fairer way of paying for water.”
At present, only 25% of households have meters and most of those are in East Anglia. They are installed by water companies, and households then have about £43 added to each bill to cover the cost of installing and reading the meter.
Barrie Clarke, a spokesman for Water UK, said, “We want everyone to be more water wise—to think about the amount of water they use. But with our climate change and different weather patterns, over time it will make economic and environmental sense to think how we use water. This may mean meters.”
Mr. Clarke believes the easiest way to save water is to use less in the garden. In one hour, a sprinkler uses the same amount of water as the average family of four uses in a day—about 632 liters. He said that gardeners should water in the evening so that it dose not evaporate in the heat of the day and that every household should have a water butt to collect rainwater for use in the garden.
小題1:Which of the following is NOT the advantage of installing water meters?
A.Water consumption drops.
B.It’s fairer to pay for water.
C.They’re installed for free.
D.People are more water wise.
小題2:The passage implies that ________.
A.water meters are welcome by British people
B.people will be better off with water meters
C.everyone has become wiser to use water now
D.saving water is both good to economy and environment
小題3:How many liters of water does an average family of four use in a day after installing a meter in Britain?
A.a(chǎn)bout 126 litersB.a(chǎn)bout 158 liters
C.a(chǎn)bout 506 litersD.a(chǎn)bout 632 liters
小題4:The underlined word “evaporate” in the last paragraph means _________.
A.change into steam and disappears
B.a(chǎn)bsorb the heat of the day
C.sink into the soil
D.turn into ice
小題5:According to Mr. Clarke, some good ways to save water are as follows EXCEPT ________.
A.using less on the garden
B.using a sprinkler
C.watering in the evening
D.gathering rainfall for garden use

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Scientists in Colombia have trained a team of rats to help remove land mines from the countryside. Land mines are small bombs hidden in the ground and designed to explode(爆炸) when someone steps on them.
When trained, the rats can smell special metals in the mines and then signal(發(fā)信號(hào)) to their human team. Then why use rats for such an important job?
In the past, dogs have been used to find bombs. Rats have a good sense of smell and can respond to orders, just like dogs do. But rats are much lighter than dogs. They stand less of a chance of setting off the mines, which explode under a certain amount of weight. What’s more, the best rats are cheaper to keep than dogs. It costs about the same amount of money to take care of one dog as it does 70 rats.
The rats have already been used in Tanzania, an African country with many land mines. Luisa Fernanda Méndez and her team in Colombia are training the even lighter Wistar rats. These are the white rats with red eyes that scientists often use in laboratory experiments. “They even train their babies to perform their jobs, which saves us a lot of time, ” Méndez said.
Colombia has the second-highest rate(比率) of deaths from land mine accidents in the world. Last year, land mines killed 695 people — 56 of whom were children. A criminal group called the Revolutionary Armed Forces of Colombia, or FARC, as well as other organizations, have placed the mines. FARC are strongly against Colombia’s government. The group has placed mines all around its own bases and in many places in the countryside.
In the past, the Colombian government hired peasants and poor farmers to find mines. Many of them died trying to find the well-hidden bombs.
Colombian police official Erick Guzmán hopes the team of rats can come to the rescue(援救). “These rats will be a great help,” he said.
小題1:How do rats help to find land mines?
A.By their special sight. B.By their light weight.
C.By their sense of smell.D.By their excellent hearing.
小題2:The advantage of rats over dogs in finding bombs is that _____.
A.they are cleverer.
B.they run faster
C.they have a better sense of smell
D.they don’t make mines explode as easily
小題3:The underlined word “They” may refer to ______.
A.scientistsB.Wistar rats
C.dogsD.Méndez and her team
小題4: What is the passage mainly about?
A.Specially-trained rats help clear land mines.
B.People in Tanzania are suffering from land mines.
C.Dogs are no longer used to find land mines.
D.Land mines have become a great danger to Colombians.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Hundreds of students from around the world gathered in New York City last week for the Microsoft Imagine Cup finals. They came to present their ideas for using technology to solve world problems.
Microsoft education director Suzi Levine says the nine-year-old program began mainly as a competition to create technology.
SUZI LEVINE: "When we realized that students really actually want to have a purpose for what they're creating, we introduced the idea of inspiring them with the UN Millennium Development Goals and suggesting that they use those for their muse(靈感). "This past year we also rolled out something called the Imagine Cup Solve This library(創(chuàng)新杯求解計(jì)劃知識(shí)庫), where IGOs, NGOs and nonprofits can submit some of the technical challenges that they would like students to consider for their solutions."
Microsoft says over 350,000 high school and college students registered for this year's competition. Judges chose more than four hundred of them to attend the finals.
SUZI LEVINE: "One from Thailand was called NewKrean, where they created a Windows Phone 7 application that allows you to broadcast your location to your social network of friends so that you can be more easily rescued." They named their application Terra.
Suzi Levine says there were also ideas from Egypt inspired by the revolution that overthrew president Hosni Mubarak in February.
SUZI LEVINE: "One was to use Bluetooth as sort of a Twitter equivalent so that if the government shuts down the Internet, you actually can still have a massive social distribution."
Students competed in nine categories. For example, in software design the top prize of twenty-five thousand dollars went to Team Hermes from Ireland. The students developed a device for cars to collect information on road conditions, driving behavior and traffic incidents.
A team from Taiwan's National Tsing Hua University won first place in the embedded(內(nèi)嵌的) development category. They developed a network of wireless devices to help plot the safest escape routes during a fire.
Next year's awards ceremony will take place in Australia. Registration for Imagine Cup twenty-twelve opened Friday. Also, Microsoft announced plans for a three million dollar program to help Imagine Cup winners further develop their projects.
小題1:Which of the following is true ?
A.The program is sponsored by Microsoft.
B.Next year, the awards ceremony will be held in New York City.
C.Any high school or college student can attend the finals.
D.The initial purpose of the program is to solve world problems using technology.
小題2: What can we infer from the third paragraph?
A.The UN offers great help to the program.
B.Microsoft sets up a library for the students who want to achieve their goals.
C.IGOs, NGOs and nonprofits also provide help for the students.
D.Microsoft takes effective measures to inspire the students.
小題3:What does the underlined word “overthrew ” in Paragraph 6 mean ?
A. AbandonedB.SupportedC.Drove awayD.Overturned
小題4:What can we know from Paragraph 7?
A.They want to replace Bluetooth with Twitter.
B.They want to combine Bluetooth with Twitter.
C.They want to replace Twitter with Bluetooth.
D.Twitter can still be used without the Internet.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Speak, speak, speak!
Practise speaking as often as you can. Speaking to yourself is good practice.
Try recording yourself whenever you can.
Compare your pronunciation with the master version(原版)to see how you can do better and have another go. If you do this several times, you will find that each time is better than last.
Why not learn with someone else?
It helps if you can learn with someone else. If you can persuade a friend or family member to study with you, it will make you keep working.
Don't get stuck by a word you don't know.
Practise improving ways of getting your meaning across when speaking spontaneously(本能地),even if you don't know the exact words or phrases. Think of things you might want to say whenever you have spare time. Use facial expressions, hand movements, anything to make yourself understood.
Language learning is also about intuition(直覺).
Guesswork is an important way to learn a new language. When listening to recorded material, you aren't expected to understand everything first time round. If you play the same piece several times, you will most probably understand something new each time.
Build up your vocabulary.
A wide vocabulary is the key to successful language learning but don’t try to learn too much at once. It’s best to study frequently, for short periods of time. Take at most six or seven items of vocabulary and learn them. Put them into sentences to fix them in your mind, and then come back to them later.
And above all, have fun!
小題1:  What’s the purpose of this passage?
A.To tell us the importance of practicing speaking as often as we can.
B.To tell us a few tips to help us learn a new language well.
C.To tell us that guesswork is an important way to learn a new language.
D.To tell us that a wide vocabulary is the key to successful language learning.
小題2: What’s the meaning of the underlined phrase in the first part?
A.Have another try or attempt.
B.Move away from a place to another.
C.Enter a certain state or condition.
D.Follow or take a certain course.
小題3:  To learn English well, we shouldn’t _______ according to the passage.
A.practice speaking as often as possible
B.study frequently, for short periods of time to build up our vocabulary
C.try to understand everything and stop when we meet a new word
D.try to persuade a friend or family member to study with us
小題4: According to the passage, to learn a new language well, the most important thing is ______.
A.speaking as much as possibleB.having fun
C.a(chǎn) wide vocabularyD.guesswork

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

CONGRATULATIONS
We’ve organized the following information to help you prepare for your arrival at Boston College.Please feel free to contact our Admissions Office at any time over the coming months with any questions.
Your First Steps…
Please return the Acknowledgment Form sent with your acceptance letter to Dean Robert Howe, Graduate School of Arts & Sciences, McGuinn Hall 221,140 Commonwealth Avenue, Chestnut Hill, MA 02467.
■For Ph.D.Acceptances and Master’s Acceptances with funding, we ask you to reply by April 25, 2008.
■For Master’s Acceptances without funding and Non-degree Acceptances, we ask you to reply by May 31, 2008.
■You should also contact your department to receive any department information.
Over the Coming Months…
Get informed about services around campus.We have provided links for you to the following offices.
■Student Services
After you return your Acknowledgment Form, you should receive a letter containing your BC Username and Eagle ID number.With this information you can reach email and Agora.In Agora, BC’s online community, you can update your student information, check your student account, and register (登記) for classes.
The Office of Student Services issues (發(fā)行) your BC Eagle One Card.This ID card acts as your campus library card and meal card.
Student Services’ website offers a complete listing of courses for the school year, as well as student forms and other important student information.The Office of Student Services also handles billing.
■Housing …
CLICK HERE for more information.
If we can be of any more help to you, just contact us.Congratulations again! We look forward to you joining our University!
小題1:The above page can most probably be read _________.
A.on the Boston College websiteB.in the Boston College newspaper
C.on BC Eagle One CardD.a(chǎn)t Student Services
小題2:The information above is particularly useful for those ________.
A.who want to apply for Boston College
B.who want to know about Boston College
C.who’ve been admitted to Boston College
D.who’ve decided to pay a visit to Boston College
小題3:If you want to study for your master’s degree with funding, you will have to _______.
A.return your Acknowledgment Form by May 31, 2008
B.send back your Acknowledgment Form by April 25, 2008
C.email your Acknowledgment Form to Admissions Office by May 31, 2008
D.return your Acknowledgment Form to Student Services by April 25, 2008
小題4:If you want to decide what courses for the school year you’d better _________.
A.call up the Office of Student Services
B.get in touch with the Admissions Office
C.read your acceptance letter
D.visit Student Services’ website

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

根據(jù)短文內(nèi)容,從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。
1________
Examinations are almost always stressful Students rarely know exactly what to expect on the test, and those who suffer from exam fear or exam anxiety can see their grades suffer as a result of this stress. For some students,exam fear causes them to “ seize up ’’ and forget what they have studied.
2______Good study habits and learning how to relax can help students overcome exam fear.
3     ______According to Penn State University and Kids Health,proper study habits and preparation are the keys to cutting out exam fear. Avoid last-minute “cramming” for exams and actively listen while in class.
Focus on positive thoughts, relax the night before your test and reward yourself after the test is over. Often, people who suffer from exam anxiety cannot shut out negative thoughts or emotions about the test, and this can contribute to feeling more anxiety than normal 4______
Keep your mind and body healthy by getting  enough sleep, eating well and exercising. Healthier people who are well-rested often do better on exams.
5_____ Exam fear is normal When that anxiety severely interferes (干擾)with your ability to take the test, however, outside help might be needed. Ask your teachers and family for support and help.
A.How To Succeed hi An Exam
B.How To Overcome Exam Fear
C.Develop good study habits.
D.Understand that you are not alone and ask for help if necessary.
E.   Remind yourself that it’s just one test and that you can get through it
F.   Battling this type of performance anxiety can be hard, but it is not impossible.
G.   Remind yourself to read the instructions carefully.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Skiping classes violates school rules and a poor attendance record will damage your final mark. But some college students still try every means to escape classes.   The number of these rebels may be much bigger than you think.  Three students from Anhui Normal University established Itaoke. Com in June. The website quickly attracted 2 000 registered members in three months. On the website, students share their experiences of skipping classes and even post ads to look for someone to stand in for them to attend courses.  Its embarrassing for universities to see this shameful behavior discussed:
However,it's good for schools and teachers to know via the website the reasons why students skip classes,according to Professor Xiao Haitao from Shenzhen University: Xao pointed out that some`students skip classes because of laziness.Others play truant because the teaching is truly dissatisfactory,“Universities can seek improvements to give a cure to the class-skipping problem,”said Xiao.
Chen Yang,21,thinks that he is  “forced" to skip some courses because of the poor teaching.  the  senior,majoring in English at Yangtze University, thinks that he's wasting time in the classroom when the teacher reads the textbook word for word or hands him outdated reading materials. He would rather skip classes to study in the library, watch online videos of Harvard or Yale lectures,or sit in on(旁聽)other courses he is interested in. Chen draws a clear line between himself and those who skip classes in order to get more sleep or fool around on campus. He emphasized:“I skip classes with a clear goal,which is to probe into areas I'm interested in and broaden my horizons.”
Li Sicen,President of the National Taiwan University,seems to be on Chen's side.  Li claimed that he supported those students who skip classes for good reasons.
However,Professor Xiao warns students that Li is not giving permission for students to skip  classes. Xiao suggests that Li was just showing his understanding of truancy in a limited number of cases.
In Professor Pan Cuiqiong's opinion,students tend to jump to the conclusion that a certain course is boring and useless. "To clear students' misunderstanding,teachers should use materials closely related to students’lives and adapt interactive teaching methods,”said Pan.
Besides offering teachers more training,schools also need to give students different optional courses and ensure that they can attend the courses they are interested in,according to  Professor  Xiao.  Many Chinese students have the experience of being kicked out of an optional course because its size is limited. They are then forced to choose courses they dislike and are likely to skip them. We may learn from Sydney University in Australia.  There aren't any problems with numbers---if a course is popular then there will be more than one class per week.
小題1:The underlined word“rebels" in Paragraph 1 refers to           
A.students who embarrass their universities
B.students who establish websites
C.students who skip classes
D.students who quarrel with their parents
小題2:Chen Yang Skips some courses because_       ___.
A.his school is more student-centered
B.he wants to get more sleep
C.he wants to fool around on campus
D.the teaching style needs much improvement
小題3:According to the passage,we learn that Professor Xiao__     __.
A.is giving permission for students to skip classes
B.thinks it's embarrassing for the three students to establish ltaoke. com
C.thinks the website will help to know why students skip classes
D.claimed that he supported those students who skip classes for good reasons
小題4:Which of the following measures is NOT mentioned to stop students skipping classes?
A.Teachers should adopt practical materials and flexible teaching methods.
B.Schools should offer teachers more training:
C.Schools need to ensure that students can attend various courses they are interested in.
D.Students should be punished if they skip classes.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

It’s not easy being a teenager---nor is it easy being the parent of a teenager. You can make your child feel angry, hurt, or misunderstood by what you say without realizing it yourself. It is important to give your child the space he needs to grow while gently letting him know that you’ll still be there for him when he needs you.
Expect a lot from your child, just not everything. Except for health and safety problems, such as drug use or careless driving; consider everything else open to discussion. If your child is unwilling to discuss something, don’t insist he tell you what’s on his mind. The more you insist, the more likely that he’ll refuse to talk. Instead, let him attempt to solve things by himself. At the same time, remind him that you’re always there for him should he seek advice or help. Show respect for your teenager’s privacy(隱私). Never read him his mail or listen in on personal conversions.
Teach your teenager that the family phone is for the whole family. If your child talks on the family’s telephone for too long, tell him he can talk for 15 minutes, but then he must stay off the phone for at least an equal period of time. This not only frees up the line so that other family members can make and receive calls, but teaches your teenager moderation (節(jié)制). Or if you are open to the idea, allow your teenager his own phone that he pays for with his own pocket money or a part-time job.
小題1:Why is it not easy being a teenager or a parent of a teenager?
A.Because the teenager is very naughty.
B.Because the parent always expects a lot from the child.
C.Because you can make your child feel hurt, or misunderstood by what you say without realizing it yourself.
D.Because the teenager wants his or her own space.
小題2:The main purpose of the text is to tell parents       .
A.how to get along with a teenager B.how to respect a teenager
C.how to understand a teenagerD.how to help a teenager grow up
小題3:The last paragraph is about how to teach a teenager        .
A.to use the phone in a sensible wayB.to pay for his own telephone
C.to share the phone quicklyD.to answer the phone quickly
小題4:What should parents do in raising a teenager according to the text?
A.Not allow him to learn driving or take drugs.
B.Give him advice only when necessary.
C.Let him have his own telephone.
D.Not talk about personal things with him.

查看答案和解析>>

同步練習(xí)冊(cè)答案