相关习题
 0  52284  52292  52298  52302  52308  52310  52314  52320  52322  52328  52334  52338  52340  52344  52350  52352  52358  52362  52364  52368  52370  52374  52376  52378  52379  52380  52382  52383  52384  52386  52388  52392  52394  52398  52400  52404  52410  52412  52418  52422  52424  52428  52434  52440  52442  52448  52452  52454  52460  52464  52470  52478  151629 

科目: 来源:2012届广东省肇庆市二高高三第三次阶段考试英语卷 题型:阅读理解

Can people change their skin color without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin color.
The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.
Scientists have changed the color of a dark-striped zebrafish(斑马鱼) to uniform gold by inserting a version of the pigment (色素) gene into a young fish. As with humans, zebrafish skin color is determined by pigment cells, which contain melanin (黑色素). The number, size and darkness of melanin per pigment cell determine skin color.
It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation (变异) in the gene for melanin production. This results in less pigmented skin.
However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.
Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun (太阳光紫外线), which can cause skin cancer.
But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.
Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin color, said Cheng.
The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin color without damaging it like chemical treatment did on Michael Jackson.
【小题1】 The passage mainly tells us that ________.

A.people can not change their skin color without any pain
B.the new discovery could lead to research into ways to change skin color safely
C.pop king Michael Jackson often changed his skin color as he liked
D.scientists have found out that people’s skin color is determined by the gene
【小题2】 It can be inferred from the passage that ________.
A.nowadays people who want to change their skin color have to suffer a lot from the damage caused by the chemical treatment
B.Europeans and Africans have the same gene
C.the new discovery could help to find medical treatments for skin cancer
D.there are two kinds of genes
【小题3】Scientists have done an experiment on a dark-striped zebrafish in order to ________.
A.find the different genes of humans’
B.prove the humans’ skin color is determined by the pigment gene
C.find out the reason why the Africans’ skin color is dark
D.find out the ways of changing people’s skin color
【小题4】The reason why Europeans are light-skinned is probably that _____
A.they are born light-skinned people
B.light-skinned Europeans have mutation in the gene for melanin production
C.they have fewer activities outside
D.they pay much attention to protecting their skin
【小题5】The writer’s attitude towards the discovery is ________.
A.neutral(中立的)B.negativeC.positiveD.indifferent(冷漠)

查看答案和解析>>

科目: 来源:2011-2012学年湖南省望城一中高二上学期期中考试英语试卷 题型:阅读理解

DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure.   Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
【小题1】 From the passage, we can know that a boy looks like his parents because______.

A.he is son of his parents.
B.his parents’ DNA decides his appearance.
C.he has received DNA from his father or his mother.
D.scientists have put some of his parents’ DNA into him.
【小题2】What does the underlined expression “let loose” probably mean?
A.let … go freeB.get rid of
C.absorbD.survive
【小题3】 What is the best title for the passage?
A.The DNA Research in Japan
B.A New Way of DNA Research in Japan.
C.The Causes and Effects of DNA Research
D.The Advantages And Disadvantages of RDNA
【小题4】 The following statements are true about RDNA research EXCEPT ______.
A.the research has been stopped because the created animals carry viruses
B.“super-trees” might be widely planted around the world
C.scientists have not completely understood DNA
D.RDNA research will benefit human beings a lot
【小题5】You might find this passage in / on a ________.
 
A.fashion magazineB.novelC.scientific newspaperD.sports newspaper

查看答案和解析>>

科目: 来源:2011-2012学年湖南省望城一中高二上学期期中考试英语试卷 题型:阅读理解

Goals can help you do, be and experience everything you want in life. Instead of just letting life happen to you, goals allow you to make your life happen.
Successful and happy people have an idea of how their life should be and they set lots of goals to help them succeed. By setting goals you are taking control of your life. It’s like having a map to show you where you want to go. Think of it this way. There are two drivers. One has a destination in mind which is laid out for her on a map. She can drive straight there without any wasted time or wrong turns. The other driver has no goal or destination or map. She starts off at the same time from the same place as the first driver, but she drives without an aim around, never getting anywhere, just using up gas and oil. Which driver do you want to be?
Winners in life set goals and follow through on them. Winners decide what they want in life and then get there by making plans and setting goals. Unsuccessful people just let life happen by accident. Goals aren’t difficult to set―and they aren’t difficult to reach. It’s up to you to find out what your goals and ideals(理想)really are.
Research tells us that when we write a goal down, we are more likely to achieve. Written goals can be reviewed regularly,and have more power. Like a contract with yourself, they are harder to neglect(忽视)or forget. Also when you write your goals in a particular way, you are able to make yourself be continuously alert(警觉)to situations that will further your goals.
【小题1】The writer gave the example of two drivers to show                .

A.how stupid the first driver wasB.the importance of having a map and right direction
C.how stupid the second driver wasD.the importance of setting goals
【小题2】According to the passage, successful people are different from unsuccessful ones because   .
A.the successful people set goals for everything and can get help from others
B.the unsuccessful people always set unrealistic plans for themselves
C.the successful people set goals in their lives and make plans to carry it out
D.the unsuccessful people make plans for everything but can not work hard
【小题3】According to the passage, the most important thing in realizing one’s ideal is to      .
A.try to be realistic about one’s ability
B.let others help him or her to make his or her dream come true
C.let others understand him or her first,then work together with them
D.have a clear mind of what he or she wants in life
【小题4】Which of the following is TRUE according to the passage?
A.Goals can make you gain everything you want in life
B.Only successful people can be happy
C.If you want to succeed,you need a set long-term goals instead of short-term Goals
D.When we put our goal down on papers, we are more likely to succeed
【小题5】Which is the best title for the passage?
A.Goals help you succeedB.How to succeed
C.Why we always failedD.A research on setting goals

查看答案和解析>>

科目: 来源:2011-2012学年山东省郓城一中高二上学期模块考试英语卷 题型:阅读理解

The Ocean Institute welcomes people to the City of Dana Point’s Festival of Whales celebration on both weekends.The event celebrates the migration(迁徙)of the whales off our coast.Respected ocean scientists of the ocean Institute introduce visitors to the world of whales.The speakers are arranged as the following.   
Saturday,March 5,12:30 pm
Dr Gwen Goodmanlowe from Califomia State University is a full-time lecturer in the Department of Biology,and advises students working on degrees in marine(海洋的) biology.She received her doctorate in zoology from the University of Hawaii-Honolulu.   
Sunday,March 6,12:30 pm
Matt Leslie,from Scripps Institute of Oceanography,has studied whales off the coast of Australia.Some of his current research projects include population structure analysis of whales using performance testing.He will lecture on guides for treatment of marine animals.
Saturday,March 12,12:30 pm
Dr Merkens,from Scripps Institute of Oceanography,will present her latest research on how sound or music can be used as a means to identify characteristics of whales and to find out how whales communicate with one another in the environment.
Sunday,March 13, 2 pm
Robert L. Pitman is a marine ecologist working for the National Marine Fishing Service.He began his career 35 years ago,studying seabirds and whales,and spends much of his time at sea on vessels at locations all over the world.His main interest is the ecology of the Antarctic killer whale.
The Festival will allow visitors to know about new discoveries in marine animal research and to explore a variety of information on whales.Visitors will have the opportunity to listen to underwater whale sounds,and enjoy hands-on activities.Guests will tour the tall ship Pilgrim.
Cost:$6.50 adults,$4.50 children(ages 4-12).For more information, please visit www.ocean-institute.org or call(949) 496-2274.
【小题1】What do we know from the passage?

A.A large number of scientists will attend the Festival of Whales celebration.
B.The Festival of Whales celebration will be held from March 5 to March 13.
C.The Ocean Institute will hold the City of Dana Point’s Festival of Whales.
D.Four ocean scientists will tell visitors some information about whales.
【小题2】What time should you attend the festival if you want to leam how to treat marine animals?
A.At 12:30 pm on Saturday, March 5.
B.At 12:30 pm on Sunday, March 6.
C.At 12:30 pm on Saturday, March 12.
D.At 2 pm on Sunday, March 13.
【小题3】If you only have time after l pm on weekends,you can listen to a lecture delivered by_________ .
A.Gwen Goodmanlowe B.Mart LeslieC.MerkensD.Robert L.Pitman
【小题4】Which of the following things can NOT visitors do according to the passage?
A.Have close contact with underwater whales.
B.Leam about new discoveries in marine animal research.
C.Explore some information on whales.
D.Tour the tall ship Pilgrim.
【小题5】If a couple and their 13-year-old child attend the event,they would need to pay_________.
A.13 dollarsB.17.50 dollarsC.19.50 dollarsD.11 dollars

查看答案和解析>>

科目: 来源:2012届浙江省苍南中学高三上学期期中考试英语卷 题型:阅读理解

Today, there’s hardly an aspect of our life that isn’t being upended by the tons of information available on the hundreds of millions of sites crowding the Internet, not to mention its ability to keep us in constant touch with each other via electronic mail. “If the automobile and aerospace technology had exploded at the same pace as computer and information technology,” says Microsoft, “a new car would cost about $ 2 and go 600 miles on a small quantity of gas. And you could buy a Boeing 747 for the cost of a pizza.”
Probably the biggest payoff, however, is the billions of dollars the Internet is saving companies in producing goods and serving for the needs of their customers. Nothing like it has been seen since the beginning of the Industrial Revolution, when power-driven machines began producing more in a day than men could turn out in nearly a year. “We view the growth of the Internet and e-commerce as a global trend,” says Merrill Lynch, “along the lines of printing press, the telephone, the computer, and electricity.”
You would be hard pressed to name something that isn’t available on the Internet. Consider: books, health care, movie tickets, construction materials, baby clothes, stocks, cattle feed, music, electronics, antiques, tools, real estate, toys, autographs of famous people, wine and airline tickets. And even after you’ve moved on to your final resting place, there’s no reason those you love can’t keep in touch. A company called FinalThoughts.com offers a place for you to store “afterlife e-mails” you can send to Heaven with the help of a “guardian angel”.
Kids today are so computer literate that it in fact ensures the United States will remain the unchallenged leader in cyberspace for the foreseeable future. Nearly all children in families with incomes of more than $75,000 a year have home computers, according to a study by the David and Lucile Packard Foundation. Youngsters from ages 2 to 17 at all income levels have computers, with 52% of those connected to the Internet. Most kids use computers to play games (some for 30 hours or more a week), and many teenage girls think nothing of rushing home from school to have e-mail chats with friends they have just left.
What’s clear is that, whether we like it or not, the Internet is an ever growing part of our lives and there is no turning back. “The Internet is just 20% invented,” says cyber pioneer Jake Winebaum. “The last 80% is happening now.”
【小题1】What can we learn from the Microsoft’s remark?

A.Today’s cars and airplanes are extremely overpriced.
B.Information technology is developing at an amazing speed.
C.Information technology has reached the point where improvement is difficult.
D.There’s more competition in information technology industry than in car industry.
【小题2】According to the author, the biggest benefit of the Internet is that___.
A.it saves companies huge amounts of money
B.it speeds up profit making
C.it brings people incredible convenience
D.it provides easy access to information
【小题3】The author gives the example of FinalThoughts.com to make the point that____.
A.there are some genius ideas on the Internet
B.almost anything is available on the Internet
C.people can find good bargains on the Internet
D.people are free to do anything on the Internet
【小题4】What can we learn from the fourth paragraph?
A.There is a link between income and computer ownership.
B.Many American children don’t put computers to good use.
C.Studies show that boys are more computer literate than girls.
D.The U.S. will stay ahead in the information technology in years.
【小题5】Which sentence has the phrase that has the same meaning as the one underlined in the fifth paragraph?
A.Some can tell you that he has changed their lives, while others think nothing of him.
B.Think nothing of it. It was my pleasure.
C.He thinks nothing of staying up all night in the Café bar.
D.He thinks nothing of the pain in his back for the moment.
【小题6】What is the message the author intends to convey?
A.The Internet is going to get firm hold of our lives some day.
B.The Internet is going to influence our lives even more greatly.
C.We should have a positive attitude towards the changes the Internet brings.
D.Children should be well prepared for the challenges in the information age.

查看答案和解析>>

科目: 来源:2011-2012学年度辽宁省沈阳市同泽女中高一上学期期中考试英语卷 题型:阅读理解

Honeybees
Honeybees can do three kinds of jobs.
It is one of the most unusual insects in the world. Bees are special because they divide up their honeybee work. Each bee has a certain job to do.
The busiest bee is the worker. Workers build the nest, called a hive. Inside the hive, workers make a honeycomb from wax(蜂蜡). They store honey there for food. Workers are always cleaning and fixing the hive. They even stand at the opening and fan their wings to cool the hive. Worker bees will attack anything—even people—to keep their hive safe.
Another kind of bee is the drone(雄蜂). Drones are male bees, and their job is to fly with the queen bee and mate with her. After the queen mates, the worker bees drive the drones away. The drones then starve to death.
The third kind of bee is the queen. Each hive needs only one queen, and her job is laying eggs. She can lay as many as 2, 000 eggs a day.
【小题1】The bee’s nest is called a _______.    

A.hive B.honeycomb C.drone D.wax
【小题2】Which jobs do workers do?
A.They lay 2, 000 eggs each day and build a nest.
B.They mate with the queen bee and then starve.
C.They clean the hive and keep it cool.
D.They attack the queen bee.
【小题3】According to the story, bees _______.  
A.are very dangerous insects
B.will attack anything or anyone to protect the hive, if necessary
C.are like any other insect that flies
D.eat each other as food
【小题4】The drone is driven away when its job is finished, because _______.  
A.it attacked the workersB.it is no longer needed in the hive
C.the queen bee has diedD.it ate the queen bee

查看答案和解析>>

科目: 来源:2011-2012学年广东省梅州市叶塘中学高三英语第一次月考试卷 题型:阅读理解

The hole in the Earth's ozone layer (臭氧层) has until now protected Antarctica from the worst effects of global warming. But scientists have warned that as the hole closes up in the next few decades, temperatures on the continent could rise by around 3oC on average, with melting ice contributing to a global sea level increase of up to 1.4 metres.
In the past decades the western Antarctic has seen rapid ice loss as the world has warmed, but the other parts of the continent have, paradoxically, been cooling, resulting in a 10% increase in ice in the seas around the region. This is because the hole in the ozone layer has increased cold winds in Antarctica, making much of the continent surface colder than usual.
But now that the gasses that cause the ozone hole have been banned, scientists expect the hole to repair itself within the next 50 to 60 years. By then the cooling effect will have faded out and the Antarctic will face the full impact of global warming. This means an increase in average air temperatures of around 3OC and a reduction in sea ice by around a third.
The biggest threat to the continent comes from warming seas. Robert Johnson, a scientist who monitors Antarctica ice sheets, said, "The ice sheets in Antarctica are hundreds of metres thick. But once warm ocean waters start flowing underneath, the ice will begin thinning and could break up very quickly. "Thinning ice sheets cause ice to break away from the continent and to melt even faster. Escaping ice from western Antarctica has already resulted in a 10% rise in global sea level in recent decades.
Johnson believes that international action to reduce global warming is required immediately or it may be too late. "Everything is connected - Antarctica may be a long way away but it is an important part of the Earth's system," said Johnson. "It contains 90% of the world's ice, 70% of the world's fresh water and that is enough, if it melts completely, to raise sea levels by 63 metres."
Even in a worse-case situation scientists don't expect the ice to entirely disappear, but predict that, because of the melting ice sheets, average sea level rise will be around 1.4 metres higher by the end of the century.
【小题1】The underlined word "paradoxically" (in Paragraph 2) most probably means "_       _".

A.rapidlyB.approximately C.contradictorilyD.apparently
【小题2】What is the effect of the hole in the ozone layer on Antarctica?
A.It is making much of the continent colder.
B.It is causing the ice to melt faster.
C.It is making the effects of global warming in the region worse.
D.It is reducing the amount of water in Antarctica.
【小题3】 What do scientists think is the biggest danger facing Antarctica?
A.Rising sea levels. B.Warming sea water temperature.
C.Water pollution. D.Growing ice sheets.
【小题4】 Which of the following is true according to the passage?
A.Antarctica contains most of the world's fresh water.
B.The average temperature has increased by 3 degree centigrade in recent decades.
C.Antarctica is currently experiencing the full effects of global warming.
D.Ten percent of Antarctica's ice has already been lost.
【小题5】The best title for the passage is ___ ___     .
A.Our planet in danger B.Antarctica melting away
C.Action plan to save Antarctica D.Let's save the ozone layer

查看答案和解析>>

科目: 来源:2011-2012学年广西北海市合浦县教育局教研室高二上学期期中考试英语试卷 题型:阅读理解

In many countries today, laws protect wildlife. In India, the need for such protection was realized centuries ago.
About 300 B.C. an Indian writer described forest that were somewhat like national parks today. The killing of game beasts was carefully supervised(监视). Some animals were fully protected.Within the forest, nobody was allowed to cut timber(wood for building), burn wood for charcoal(炭), or catch animals for their furs. Animals that became dangerous to human visitors were caught or killed outside the park so that other animals would not become uneasy.
The need for wildlife protection is greater now than ever before. About a thousand species of animals are in danger of extinction, and the rate of extinction was about one species every fifty years from A.D. 1 to 1800, but now it is about one species every year. Everywhere, men are trying to solve the problem of protecting wildlife caring for the rapid growth of the world’s population.
【小题1】 In forest of ancient India __________.

A.people were permitted to hunt for fun
B.only few kinds of animals could be killed
C.the killing of game beasts was strictly limited
D.no killing of beasts was allowed.
【小题2】Dangerous animals were caught or killed outside the park so as to __________.
A.keep human visitors safeB.free the rest of the animals from worry or fear
C.both A and BD.supply other animals with more food
【小题3】The underlined word “extinction” probably means __________.
A.being hungryB.dying outC.growing slowlyD.being killed
【小题4】The example of man’s connection with wildlife protection can date back to _______.
A. the third century            B. more than 2000 years ago
C. A. D. 1 to 1800            D. over 300 years ago

查看答案和解析>>

科目: 来源:2011-2012学年度江苏省启东中学高一上学期期中考试英语卷 题型:阅读理解

A lazy Susan is an addition to a table that is designed to assist in moving food from one person to another while dining. This is achieved through the use of a turntable (转盘), which usually moves the food in a circle when it is pushed by those at the table. In this way, the food never has to be picked up and passed around the table. Instead, it remains in place on the lazy Susan.
A lazy Susan may also be a part of a kitchen cabinet (橱柜). In this sense, the lazy Susan is a type of shelving unit within the cabinet that is able to turn around its axis(轴心) . One may turn the lazy Susan in order to find certain goods in storage. From the outside, a lazy Susan appears to be two cabinets that are located at a right angle (直角) to each another. When one of these cabinets is pushed, however, both doors move and the lazy Susan is revealed inside.
It is believed that Thomas Jefferson invented the lazy Susan in the 18th century, though it was called “dumbwaiter” at that time. It is said that Jefferson invented the lazy Susan because his daughter complained she was always served last at table and, as a result, never found herself full when leaving the table. Others believe that Thomas Edison was the inventor, as he is believed to have invented the turntable for his phonograph (留声机). The turntable may have developed into the lazy Susan later.
Regardless of who invented it, it wasn’t until 1917 that the term “lazy Susan” was used in an advertisement for the invention. In Britain, however, the term “dumbwaiter” is still used rather than “lazy Susan”. The reason for the naming of it is still a mystery. One theory is that it was named after either Jefferson’s or Edison’s daughter, both of whom were named Susan.
【小题1】What is a “lazy Susan”?

A.A waitressB.A convenient toolC.A tableD.A cabinet
【小题2】According to those who believed Thomas Jefferson invented the lazy Susan, _______.
A.his daughter was very lazyB.the lazy Susan didn’t exist until the 18th century
C.Thomas Edison was his friendD.Thomas Edison didn’t invent the phonograph
【小题3】We can learn from the last paragraph that ___________.
A.the lazy Susan can work by itself
B.the lazy Susan was named after Thomas Edison’s daughter
C.how the lazy Susan got its name remains unknown
D.the lazy Susan was invented in Britain
【小题4】 The writer wrote the passage mainly to _________.
A.discuss how the lazy Susan was named B.teach us how to make a lazy Susan
C.introduce Thomas Edison’s inventionsD.tell us what a lazy Susan is and its origin

查看答案和解析>>

科目: 来源:2011-2012年江苏省扬大附中高三上学期期中考试英语试卷 题型:阅读理解

When you’re surfing the Internet on your laptop from your dorm or home, do you know your personal details are being gathered secretly? And would you be surprised to know the information may be sold cheaply to advertisers and marketers?
According to an investigation by The Wall Street Journal, all it takes is a tiny file in a computer-a single code consisting of a long series of numbers and letters- to record the computer user’s age, gender, location, favorite movies and hobbies.
The newspaper reports that Lotame Solutions Inc., a New York company, uses sophisticated(高科技) software called a "beacon" to capture what people are typing on a website.
Lotame packages that data into profiles(个人资料)about individuals, only without their names, and sells the profiles to companies seeking customers.Batches of such data may be sold for a few dollars.
The Wall Street Journal survey discovered that spying on Internet users is one of the fastest-growing businesses on the World Wide Web.
The "cookie"- a tiny text file put on your PC by websites or marketing firms which might be used to remember your preferences for one site, or to track you across many sites is already old news.There are new and more complex tools such as "beacons" which scan in real time what people are doing on a webpage.These beacons instantly assess the Internet user’s location, income, shopping interests and even medical conditions.
Millions of Internet users around the world also face unprecedented(空前的)threats.Private, sensitive, personal and business information is being gathered and sold without their knowledge.
Companies insist the information they gather is anonymous and the data is used harmlessly. But the technology has grown so powerful that even some of the biggest websites in the US don’t know that they were installing intrusive files on visitors’ computers.These include MSN.com and Yahoo.com.
Next time you visit a webpage and find an ad banner advertising something you’ve been planning to buy, don’t be amazed that your computer can read your mind.
【小题1】The purpose of the passage is to          .

A.introduce a tiny file in a computer-a single code
B.show how your individual information was let out when you surf the Internet
C.show how to protect your privacy
D.introduce a sophisticated software called a "beacon"
【小题2】.All of the following statements are Wrong except          .
A.Lotame sells the profiles about individuals to companies seeking customers with their age, gender, location, hobbies and names
B.spying on Internet users is the fastest-growing businesses on the World Wide Web
C.some of the biggest websites in the US know they were installing intrusive files on visitors’ computers
D.a tiny file in a computer-a single code consisting of a long series of numbers and letters can record users’ information
【小题3】It can be inferred that          .
A.because the data is used harmlessly.Internet users around the world will not face threats
B.when a person surf the Internet, his personal details may be let out without his knowledge
C.your computer can really read your mind
D.MSN.com and Yahoo.com.use software to capture what people are typing on a website
【小题4】According to the passage, “beacon”          .
A.is a tiny text file put on your PC by websites
B.is a soft ware that can package that data into profiles about individuals
C.can assess the Internet user’s location, income, shopping interests and even medical conditions
D.is not more complex than the "cookie"
【小题5】What’s the writer’s attitude to this problem?
A.NeutralB.WorriedC.Optimistic D.Indifferent

查看答案和解析>>

同步练习册答案