Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.
The ridge structure on a person’s fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.
Finger-prints can be made very easily with printer’s ink. They can by recorded easily. With special methods, identification can be achieved successfully within a short time. Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. His finger-prints can prove who he is even if his appearance has been changed by age or accident.
When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. Special techniques are used to “develop” them. Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.
Notes:
①    unique  adj. 唯一的,獨(dú)特的
②    original  adj. 最初的,原始的
③    identification  n. 辯認(rèn),鑒定
小題1: Scientists and experts have proved that the pattern of a human being’s finger skin ________.
A.is similar to his mother’s
B.is valuable to himself only
C.is like that of others with the same type of blood
D.is different from that of all others
小題2: If your fingers are wounded by knife, fire or other means, the structure of skin will ________.
A.be changed partlyB.be replaced by a different one
C.be the same when the wound is recoveredD.become ugly
小題3: Some criminals remove their own finger-prints by ________.
A.using printer’s inkB.injuring the inner skin
C.damaging the outer skin D.damaging the colour
小題4: Finger-prints have often been used as a method of solving criminal case because it ________.
A.is complicated but reliableB.is simple and not expensive
C.is expensive but easy to doD.can bring a lot of money

小題1:D
小題2:C
小題3:B
小題4:B

小題1:細(xì)節(jié)理解題。從第一段最后一句可知,人的指紋是獨(dú)一無二的。
小題2:推理判斷題。從第二段第二句Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern.可以推斷正確答案為C。
小題3:推理判斷題。從第二段最后兩句可知,罪犯要想改變以前的指紋,必須把內(nèi)部的皮膚損害掉。
小題4:細(xì)節(jié)理解題。從第三段第四句Because of the simplicity and economy of this system可知。指紋鑒別的方法簡(jiǎn)單而且經(jīng)濟(jì)。
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

The earth's biosphere (the surface layer of the planet and the surrounding atmosphere) provides the land, air, water, and energy necessary to sustain life. This life-support system is a complex, interdependent one in which energy from the sun is changed into food for humans. The entire system depends on the sun, reasonably moderate temperature, and enough supplies of oxygen, pure water, and fertile soil.
Since the earth's creation millions of years ago, the ecosystem has worked as an interdependent system relatively undisturbed by outside forces. But recently, especially since the Industrial Revolution, human beings have begun to disturb the balance of nature. Natural resources have been severely depleted (消耗) (forests have been destroyed, fertile land worn away, water polluted, and minerals used up), and the life-support system of air, water, and land has been poisoned by a variety of waste products and chemicals.
The degree of these problems was noted in a report by the U.N. Developing Council on Environmental Quality. This report predicted that if present trends continue, the world will be more crowded and polluted and less stable ecologically and politically than the world we live in now.
The twin problems of resource shortages and pollution are caused by three social forces.  First, the tremendous increase in population growth constantly increases the demand for food, energy, and other products. As the current population continues to increase, the stress on an already overburdened environment will be increased.A second source of the problem is the concentration of people in urban areas, where the ecosystem simply cannot absorb their waste products. Finally, environmental problems are worsened as more and more nations move toward modem development: an increased reliance on modern technology. As these nations become more technological, they will consume more energy, deplete more natural resources, and create more waste products than the biosphere can absorb.
小題1:The life-support system is composed of _____.
A.a(chǎn)ir, water and landB.the earth, the sun and energy
C.food, land and energyD.food, energy and the sun
小題2:The life-support system _____.
A.change energy from the sun into food for humans
B.depends on the sun for enough supplies of air, water and land
C.exists in the surface layer of the earth and the surrounding atmosphere
D.is a complex but independent system
小題3:The life-support system has been badly damaged by _____.
A.natural forcesB.human activitiesC.social movements D.political changes
小題4:The passage mainly talks about _____.
A.the effects of Industrial Revolution on human beings
B.the importance of life-support system to human beings
C.the significance of balance of nature
D.the destruction of life-support system and its causes

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

The famous American gorilla(大猩猩) expert Diane Fossey had a completely new way to study gorillas — she pretended to be one of them. She copied their actions and way of life — eating plants and getting down on her hands and knees to walk the way a gorilla does. It was a new relationship.
Diane Fossey was murdered in Rwanda in 1985 and her story was made into the popular film Gorillas in the Mist. It was a long way from King Kong, which is about a gorilla as a monster (a frightening animal), and helped to show a new idea: the real monster is man, while the gorilla is to be admired.
Today there are thought to be around 48,000 lowland gorillas and maybe 400—450 mountain gorillas in the wild. From the Congo in West Africa, to Rwanda and Uganda further east, they are endangered by hunting and by the cutting down of their forest homes.
Some time ago, I found in my letterbox a little magazine from the World Wide Fund for Nature. It had two photos side by side. One was of a young gorilla. “This is a species of mammal(哺乳類動(dòng)物),” said the words below it. “It is being destroyed by man. We must save it for our own good.” The other photo showed a human baby. The words also read, “This is a species of mammal,” but then went on: “It is the most destructive(破壞性的) on earth. We must retrain it for its own good.”
小題1:The text mainly talks about _____.
A.Diane Fossey
B.the gorillas in Rwanda
C.the protection of the gorillas
D.the film Gorillas in the Mist
小題2:We can learn from the text that _____.
A.Gorillas in the mist was based Fossey’s experiences
B.Lowland gorillas live longer than mountain gorillas
C.King Kong showed us that a gorilla is admirable
D.Diane Fossey was murdered by a gorilla
小題3:What message can we get from the two photos in the magazine?
A.Gorillas are man’s close friends.
B.Both man and the gorilla need to be saved.
C.Young gorillas are as lovely as human babies.
D.Man should live peacefully with the gorilla.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

NASA is moving ahead with plans to put a long-armed lander on Mars’ icy north pole to search for cluesfor water and possible signs of life.
The $386 million Phoenix Mars is planned to touch down in the Martian arctic in 2008. The stationary probe will use its robotic arm to dig into the icy land and pick up soil samplesto analyze. In 2002, the Mars Odyssey orbiter spotted evidence of ice-rich soil near the arctic surface.
Scientists hope the Phoenix mission will find clues to the geologic history of water on the Red Planet and determine whether microbesexisted in the ice.
Phoenix will be the first mission of the Mars Scout program, a renewed, low-cost effort to study the Red Planet. “The Phoenix mission explores new territory in the northern plains of Mars analogous to the permafrost regions on Earth,” Peter Smith said.
True to its name, Phoenix rose from the ashes of previousmissions. The lander for Phoenix was built to fly as part of the 2001 Mars Surveyor program. But the program broke down after the well-known disappearance of the Mars Polar Lander in 1999. The Polar Lander lost contact during a landing attempt near the planet’s south pole after its rocket engine shut off prematurely, causing the spacecraft to fall about 130 feet to almost certain destruction.
The Phoenix probe had been in storage at a Lockheed Martin clean room in Denver before it was reused for its present mission. It will carry science instruments that were designed for the Mars Surveyor program including an improved panoramic camera and a trench-digging robotic arm. Phoenix will lift off from the Kennedy Space Center in August 2007 and land on the planet nine months later.
Notes:
①    clue  n. 線索
②    sample  n. 標(biāo)本,樣品
③    microbe  n. 微生物
④    previous  adj. 先前的
小題1:The passage mainly tells readers that _________.
A.clues of water will be found in Phoenix
B.Phoenix will be sent to find clues of water on Mars
C.August 2007 will see Phoenix lift off
D.the Mars Scout program will be carried out
小題2: The underlined word “prematurely” (paragraph 5) means _________.
A.on timeB.behind the timeC.out of workD.a(chǎn)head of time
小題3: According to the passage, we know Phoenix will land on Mars _________.
A.in May 2008B.in August 2007
C.in August 2008D.in September 2008
小題4: According to the passage, the name “Phoenix” is after the meaning of _________.
A.rebirthB.deathC.energyD.hope
小題5:After Phoenix lands on Mars, we can infer it will firstly _________.
A.find soil samples and send them to the earth
B.look for the icy land to dig for the soil samples
C.take photos and send them to the earth
D.find the remains of the Mars Polar Lander

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Student participation in the classroom is not only accepted but also expected of the student in many courses. Some professors base part of the final grade on the student’s oral participation. Although there are formal lectures during which the student has a passive role (i.e., listening and taking notes), many courses are organized around classroom discussions, student questions, and informal lectures. In graduate discussions the professor had a “manager” role and the students make presentations and lead discussions. The students do the actual teaching in these discussions.
A professor’s teaching method is another factor that determines the degree and type of student participation. Some professors prefer to control discussions while others prefer to guide the class without controlling it. Many professors encourage students to question their ideas. Students who object to the professor’s point of view should be prepared to prove their positions.
In the teaching of science and mathematics, the controlling mode of instruction is generally traditional, with teachers presenting formal lectures and students taking notes. However, new educational trends have turned up in the humanities and social sciences in the past twenty years. Students in education, society, and history classes, for example, are often required to solve problems in groups, design projects, make presentations, and examine case studies. Since some college or university courses are “practical” rather than theoretical, they pay more attention to “doing” for themselves.
小題1:“Participation in the classroom is not only accepted but also expected of the student” in  ____
class.
A.the humanities and social sciencesB.the science and mathematics
C.the theoretical lessonsD.the strictly controlled courses
小題2:From the passage we know that education in the humanities and society __________.
A.has not changed much in the past twenty years
B.pay attention to students’ studying instead of teachers’ teaching
C.is much more important than that of science and mathematics
D.has become more practical than theoretical.
小題3:The reason why some professors ask students to make presentations and lead discussions is that __________.
A.these professors are often not well prepared before class
B.these professors want to stress “doing”
C.these professors want to test the students abilities
D.these professors are not willing to teach theory
小題4:Which of the following sentences is true according to the passage?
A.Student participation is not common in many courses like society and history classes.
B.Some professors want to control the classroom discussion.
C.Some of students are wanted to attend the lecture of science and mathematics.
D.New educational trends have turned up in the teaching of natural sciences such as
chemistry.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Imagine a training course that helps you in your specific job. Imagine tools and techniques that are so closely connected with your work that you can apply them directly to it. Imagine receiving an Open University (OU) certificate (證書) in a course which states what you have studied and achieved.
It may sound fantastic, but it’s a reality at the Open University’s CCPD, which is making learning while you work more flexible (靈活的) than ever before.
The courses are starting to change workplace learning completely. Paige, who took CCPD’s courses, said the study had changed her whole way of thinking. “It was excellent for so many reasons,” she said. “It developed me as a person and as an employee and taught me particular techniques. I was always able to bring what I’d learned into the office the next day and apply it to my job.”
Even better news for Paige was that her employer paid the full cost of her study. She became one of thousands of OU students whose fees were paid by employers who recognized the value of an OU education.
“These courses are designed for CCPD rather than as part of a formal certificate,” said Kathy, an OU teacher. “We pay more attention to development rather than assessment (評(píng)估). Our role is to give them personal developmental advice, not a mark.”
Paige is just one of 200,000 students who are learning at OU. CCPD itself is just a part of an organization that offers courses and qualifications in 360 subjects and has so far helped to develop the skills and knowledge of more than two million people.
“Education does not stop with getting a degree,” said Charles Edwards, CCPD’s director. “In a fast-moving economy you cannot afford to rely on the degree you got some time ago. You must keep updating your knowledge.”
For details on CCPD’s courses and to register with the 10% discount available to members, visit www.open.ac.uk.
小題1:According to the passage, CCPD’s courses are ________.
A.required courses for formal academic qualifications
B.training courses for professional development
C.special courses for a master’s degree
D.elective courses for university students
小題2:The example of Paige is given to show ________.
A.the benefits of lifelong learning
B.how completely learning has changed
C.the value of CCPD’s courses of the OU
D.the importance of hard work
小題3:It can be inferred from Paragraph 4 that ________.
A.Paige has got promoted after learning CCPD’s courses
B.a(chǎn)n OU education has been accepted by many employers
C.Paige is the best employee in her company
D.most employers care for their employees
小題4:According to the passage, CCPD’s courses focus on ________.
A.a(chǎn)ssessment of learners
B.learners’ personal development
C.the academic knowledge of learners
D.classroom learning

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Computers are very important to modern life.Many people think that in the future computers will be used in lots of everyday life.It is thought that we won’t have to go shopping because we will be able to get most things which are sold in shops on the Internet.There will be no more books because we will be able to get all texts from computers.The Internet will be used to play games, see films and buy food.Most telephone calls will be made by computers, too.
Some people are glad about those new ways of shopping and communicating(交流).Others do not think that computers will replace(代替)our old ways.
Some people think that one day we will not read books made of paper. Instead, we will buy and read books using computers, which will keep many different books in them at the same time.We won’t need to turn lots of pages and paper will be saved.Computerized (計(jì)算機(jī)化的) books will be used more and more.
While many people say it is a pleasure to go into shops and look at things you want to buy.It is also unlikely that many people will want to read large texts on our computers. Because paper books will perhaps be more friendly.Maybe computers won’t change these two habits.
小題1:Which is the main idea of this passage?
A.People like going shoppingB.Reading books is important
C.Computers are importantD.Computer can be used to play games
小題2:There will be no more books because________.
A.There is no paper in the future.B.People don’t like reading books.
C.They are very expensive.D.We can read passages from computers.
小題3:Which of the following is TRUE?
A.We can see films by computers.B.People all like to go shopping by computers.
C.We can’t buy anything using computers.D.All the people like reading books from computers.
小題4:Which of the following is mentioned (提到) in the passage?
A.Computers can help us e-mail our friends.B.We can chat by using computers.
C.Computers can help us make telephone calls.D.We can listen to the music by computers.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

The dams① aimed at saving Venice from the waves have been backed greatly. After eight years of argument, it plans to build 79 gates across three channels connecting the lagoon around Venice with the Adriatic Sea. The gates would be open most of the time but would be closed if there is a danger to the city.
The project, though, has run into fears that it could worsen Venice’s problems. The city throws waste into the lagoon, and environmentalists fear the dams will cause this pollution to become worse if there is no tide to wash it out regularly. But if there is a tide, the flow can wash away about 550 million cubic meters of the lagoon in a single day, which means that by leaving the dam open for only a few hours, the waste should be cleaned out.
Another piece of good news is that British scientists are confident that the dams will be able to face an expected rise in sea levels caused by global warming. The gates are designed to stand a 22-centimetre rise in sea levels, but many scientists expect a global rise in sea levels of 31cm by 2100.
However, Trevor Davies and Isabel Trigo from University of East Anglia believe the dams are unlikely to broken. Climate change will weaken the local storms in the Adriatic that are the main cause of flood risk. Floodwaters are also a seasonal danger in Venice, usually because of a combination of spring tides and strong winds.
Venice, which rests on wooden piles driven into boggy③ ground, has been sinking for centuries, worsening the encroachment by the sea.
Notes:
① dam  n. 大壩
② lagoon  n. 瀉湖
③ boggy  adj. 泥濘的
④ encroachment  n. 蠶食
Choose the best answers according to the above:
1. Which of the following is the main idea of the text?
A. Venice will not disappear into the sea.
B. Dams are designed to protect Venice.
C. Venice are facing dangers from the tides.
D. Global warming makes Venice worse and worse.
2. If the project comes into use, the waste in the lagoon ______.
A. will be washed away by the tides               B. will be sent to the higher places
C. will be carried away by workers                D. will have to be reused by humans
3. According to the idea of Trevor Davies, the dams won’t be broken because ______.
A. the dams are higher than the buildings in Venice
B. there will be no tides or floods in the future
C. the climate all over the world will soon be cold
D. the storms in the Adriatic will be weaker in the future
4. According to the text, we can infer that Venice ______.
A. has been sinking for hundreds of years
B. may suffer from spring tides and strong winds
C. will be under the sea sooner or later
D. will be a city with dams around except 78 gates

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Why did humans evolve to walk upright? Perhaps because it’s just plain easier. Make that “energetically less costly”, scientifically speaking.
Bipedalism—walking on two feet, is one of the defining characteristics of being humans, and scientists have debated for years how it came about. In the latest attempt to find an explanation, researchers trained five chimps(黑猩猩)to walk on a treadmill(跑步機(jī))while wearing masks that allowed measurement of their oxygen consumption. The chimps were measured both while walking upright and while moving on their legs and knuckles(膝關(guān)節(jié)).That measurement of the energy needed to move around was compared with similar tests on humans and the results are published in this week’s online edition of “Proceedings of the National Academy of Sciences”.
It turns out that humans walking on two legs use only one-quarter of the energy that chimps use while knucklewalking on four limbs(肢).And the chimps, on average, use as much energy using two legs as they did when they used all four limbs.
However, there were differences among chimps in how much energy they used, and this difference corresponded to their different manner of walking and anatomy(解剖構(gòu)造).One of the chimps used less energy on two legs, one used about the same and the others used more, said David Raichlen, assistant professor of anthropology at the University of Arizona.
“What we were surprised at was the variation(變異) ”, he said in a telephone interview. Interview. “That was pretty exciting, because when you talk about how evolution works, variation is the bottom line, without variation there is no evolution.”
Walking on two legs freed our arms, opening the door to drive the world, said Raichlen. “We think about the evolution of bipedalism as one of first events that led hominids(原始人)down the path to being humans.”
The research was supported by the National Science Foundation and the L.S.B.Leakey Foundation.
小題1: The underlined word “Bipedalism” in Paragraph 2 probably means____.
A.moving sidewaysB.walking upright
C.walking on four legsD.running fast
小題2:We can infer from the passage that____.
A.scientists have no idea on how humans’ walking on two legs came about
B.scientists have had different views on why chimps walk on four legs
C.scientists have had different views on how humans’ walking on two legs vame about
D.scientists have had similar views on how humans’ walking on two legs came about
小題3:What is Paragraph 4 mainly about?
A.How chimps saved energy.
B.Why chimps didn't walk on two legs.
C.David Raichlen studied chimps.
D.Different chimps consumed different energy.
小題4: According to the passage, humans walk upright in order to____.
A.conserve energyB.differ from other animals
C.free their brainsD.strengthen their legs

查看答案和解析>>

同步練習(xí)冊(cè)答案