They may be just passing your office, computer bag slung (悬挂) over one shoulder. Or they may be sitting in a car outside it, causally tapping away at a laptop. They look like innocent passers-by. In fact, they are stealing your corporate secrets.
Drive-by hacking is the trendy term given to the practice of breaking into wireless computer networks from outside the buildings that house them. A recent study in the UK, sponsored by RSA Data Security, found that two-thirds of organizations with wireless networks were risking their data in this way. Security experts patrolled (巡逻) several streets in the City of London seeking evidence of wireless networks in operation.
Of 124 that they identified, 83 were sending data without encrypting(加密)them. Such data could readily be picked up by a passer-by armed only with a portable computer, a wireless modem and a few pieces of software that can be freely downloaded from the Internet.
The data could include sensitive company documents containing valuable information. Or they could be e-mail identities and passwords that could be used by hackers to log into corporate networks as if they were legal users.
Most companies using wireless networking technology do not take even the simplest of measures to protect their data. Nearly all wireless network technology comes with some basic security features that need only to be activated (激活) in order to give a minimum level of security, for example, by encrypting the data being passed over the network.
Raymon Kruck, business development manager at Check Point Software, a security technology specialist, believes this could be partly a psychological problem. People see the solid walls of their building as safeguards and forget that wireless networks can extend up to 200 meters beyond physical walls.
Companies without any security at all on their wireless networks make it ridiculously easy for hackers to break in. Switching on the security that comes with the network technology should be automatic. Then there are other basic steps a company can take, says Mr. Kruck, such as changing the passwords on the network from the default (默认) setting.
Companies can also install firewalls, which form a barrier between the internal network and the public Internet. They should also check their computer records regularly to spot any abnormal activity, which might betray the presence of a hacker.
1.According to the study sponsored by RSA Data Security, two thirds of the subjects _______.
A.had most of their company data stolen
B.depended on wireless computer networks
C.were exposed to drive-by hacking
D.were unaware of the risk of wireless hacking
2.Whichof the following is NOT considered in the study?
A.The number of computer hacking incidents.
B.The number of wireless computer networks identified.
C.The way in which data are sent and received.
D.The way in which data are hacked and stolen.
3.Most wireless network technology has_________.
A.data encryption program B.password security programs
C.illegal-user detection D.firewall
4.Raymond Kruck most probably agrees that wireless network security involves ________.
A.wireless signal administration B.changes in user’s awareness
C.users’ psychological health D.stronger physical walls
5.The passage is most likely to be seen in a __________
A.book review B.science fiction C.textbook D.computer magazine
高二英语阅读理解困难题
They may be just passing your office, computer bag slung (悬挂) over one shoulder. Or they may be sitting in a car outside it, causally tapping away at a laptop. They look like innocent passers-by. In fact, they are stealing your corporate secrets.
Drive-by hacking is the trendy term given to the practice of breaking into wireless computer networks from outside the buildings that house them. A recent study in the UK, sponsored by RSA Data Security, found that two-thirds of organizations with wireless networks were risking their data in this way. Security experts patrolled (巡逻) several streets in the City of London seeking evidence of wireless networks in operation.
Of 124 that they identified, 83 were sending data without encrypting(加密)them. Such data could readily be picked up by a passer-by armed only with a portable computer, a wireless modem and a few pieces of software that can be freely downloaded from the Internet.
The data could include sensitive company documents containing valuable information. Or they could be e-mail identities and passwords that could be used by hackers to log into corporate networks as if they were legal users.
Most companies using wireless networking technology do not take even the simplest of measures to protect their data. Nearly all wireless network technology comes with some basic security features that need only to be activated (激活) in order to give a minimum level of security, for example, by encrypting the data being passed over the network.
Raymon Kruck, business development manager at Check Point Software, a security technology specialist, believes this could be partly a psychological problem. People see the solid walls of their building as safeguards and forget that wireless networks can extend up to 200 meters beyond physical walls.
Companies without any security at all on their wireless networks make it ridiculously easy for hackers to break in. Switching on the security that comes with the network technology should be automatic. Then there are other basic steps a company can take, says Mr. Kruck, such as changing the passwords on the network from the default (默认) setting.
Companies can also install firewalls, which form a barrier between the internal network and the public Internet. They should also check their computer records regularly to spot any abnormal activity, which might betray the presence of a hacker.
1.According to the study sponsored by RSA Data Security, two thirds of the subjects _______.
A.had most of their company data stolen
B.depended on wireless computer networks
C.were exposed to drive-by hacking
D.were unaware of the risk of wireless hacking
2.Whichof the following is NOT considered in the study?
A.The number of computer hacking incidents.
B.The number of wireless computer networks identified.
C.The way in which data are sent and received.
D.The way in which data are hacked and stolen.
3.Most wireless network technology has_________.
A.data encryption program B.password security programs
C.illegal-user detection D.firewall
4.Raymond Kruck most probably agrees that wireless network security involves ________.
A.wireless signal administration B.changes in user’s awareness
C.users’ psychological health D.stronger physical walls
5.The passage is most likely to be seen in a __________
A.book review B.science fiction C.textbook D.computer magazine
高二英语阅读理解困难题查看答案及解析
They may be just passing your office, computer bag slung (悬挂) over one shoulder. Or they may be sitting in a car outside it, causally tapping away at a laptop. They look like innocent passers-by. In fact, they are stealing your corporate secrets.
Drive-by hacking is the trendy term given to the practice of breaking into wireless computer networks from outside the buildings that house them. A recent study in the UK, sponsored by RSA Data Security, found that two-thirds of organizations with wireless networks were risking their data in this way. Security experts patrolled (巡逻) several streets in the City of London seeking evidence of wireless networks in operation.
Of 124 that they identified, 83 were sending data without encrypting(加密)them. Such data could readily be picked up by a passer-by armed only with a portable computer, a wireless modem and a few pieces of software that can be freely downloaded from the Internet.
The data could include sensitive company documents containing valuable information. Or they could be e-mail identities and passwords that could be used by hackers to log into corporate networks as if they were legal users.
Most companies using wireless networking technology do not take even the simplest of measures to protect their data. Nearly all wireless network technology comes with some basic security features that need only to be activated (激活) in order to give a minimum level of security, for example, by encrypting the data being passed over the network.
Raymon Kruck, business development manager at Check Point Software, a security technology specialist, believes this could be partly a psychological problem. People see the solid walls of their building as safeguards and forget that wireless networks can extend up to 200 meters beyond physical walls.
Companies without any security at all on their wireless networks make it ridiculously easy for hackers to break in. Switching on the security that comes with the network technology should be automatic. Then there are other basic steps a company can take, says Mr. Kruck, such as changing the passwords on the network from the default (默认) setting.
Companies can also install firewalls, which form a barrier between the internal network and the public Internet. They should also check their computer records regularly to spot any abnormal activity, which might betray the presence of a hacker.
1.According to the study sponsored by RSA Data Security, two thirds of the subjects _______.
A. had most of their company data stolen
B. depended on wireless computer networks
C. were exposed to drive-by hacking
D. were unaware of the risk of wireless hacking
2.Which of the following is NOT considered in the study?
A. The number of computer hacking incidents.
B. The number of wireless computer networks identified.
C. The way in which data are sent and received.
D. The way in which data are hacked and stolen.
3.Most wireless network technology has_________.
A. data encryption program
B. password security programs
C. illegal-user detection
D. firewall
4.Raymond Kruck most probably agrees that wireless network security involves ________.
A. wireless signal administration
B. changes in user’s awareness
C. users’ psychological health
D. stronger physical walls
5.The passage is most likely to be seen in a __________
A. book review B. science fiction C. textbook D. computer magazine
高二英语阅读理解困难题查看答案及解析
Office workers should know that long periods of sitting at your desk may be a killer. Scientists have shown a new threat from this lifestyle that they call “muscular inactivity (肌肉迟钝)”.
Sitting still for long periods of time leads to the buildup of substances (物质) in the blood that are harmful to health. And exercise alone won’t drive them away.
Millions of people spend their days between car,office desk and the sofa in front of the TV. While the bad influences are well rocognized,it has been thought that they can be changed by regular trips to the gym or swimming pool.
Now researchers say that is not enough. In addition to regular exercise,office workers need to keep moving while they work,by making regular trips to the printer,coffee machine or to chat with workmates.
Elin EkblomBak,an expert on health,says research shows long periods of sitting and lack (缺乏) of “whole body muscular movement” are strongly linked to obesity,heart disease and cancer,and a higher risk of death,regardless of (不管) whether they take enough exercise.
“Everyone knows about the health benefits of regular exercise. But what we haven’t realized before is that longperiod sitting down carries an extra risk that cannot be dealt with by taking exercise,” Dr EkblomBak said,adding that sitting still should be recognized as a risk to health.
“It is important to have a fiveminute break from desk work every 45 minutes. Don’t email workmates—walk across the office to give them the message. Take a coffee break or put the printer in the next room. I am a desk worker and I try to do it. It is not difficult but sometimes you get lost in your work and you forget about it.”
However,more studies are needed to confirm the ill effects of sitting for too long and ways of fighting them. But at present they conclude that “keep moving” should be added to the advice to “keep exercising.”
1.Nowadays,many office workers wrongly think that________.
A.long periods of sitting has bad influences on them |
B.regular exercise benefits them after long periods of sitting |
C.they are living a lifestyle called “muscular inactivity” |
D.it’s unfair for them to sit in the office for too long |
2.What does the author suggest office workers should do?
A.Chat with workmates often. |
B.Send emails instead of chatting. |
C.Keep moving in the office regularly. |
D.Take more exercise after work. |
3.The last paragraph suggests that the result of the study is________.
A.scientific | B.uncertain | C.unbelievable | D.convincing |
4.What would be the best title for the passage?
A.A new threat :longperiod sitting |
B.Office workers should keep exercising |
C.Taking exercise benefits a lot |
D.Keep moving,it could save your life |
高二英语阅读理解中等难度题查看答案及解析
阅读下面的短文,然后按照要求写一篇150词左右的英语短文。
China is facing power shortage, so your computer and television may be on holiday.
This year power shortages cover 20 provinces across the country. The shortage can usually be blamed on air conditioners. Wuhan, in Hubei province, as much as 100,000kw of electricity would be saved if people set their air conditioners one degree higher than normal.
You may have many household electrical appliances(家用电器)in your home. The following tips can help you save electricity.
l Use air conditioners less. Set the temperature a little bit higher than normal and turn it off one hour before you go out.
l Turn off the lights when you leave a room.
l Unplug electricity devices when not in use. Many televisions and computers use electricity even when they are turned off.
l In rooms where you don’t often stay for long, close curtains during the day to keep off the sun, especially on windows that face south or west. Open them in the evening to let cool air in so you may not need to use air conditioners.
l Take shorter showers. Water heaters use a lot of energy.
l Open your refrigerator door only when necessary. Each time you open the door, the compressor(压缩机) will run for 8-10 minutes to keep the inside cold.
l Ask your parents to replace your regular lights with fluorescent(荧光的)lights. They use about a fourth of the energy of regular lights.
[写作内容]
1. 概括原文第一,二段的内容,该部分词数大约30
2. 阅读上文后,谈谈你的看法,内容包括以下要点,该部分词数大约120:
(1) 电对每一个家庭的影响以及节约电能的重要性;
(2) 向大家介绍几种常见的节约照明灯用电的方法.
[写作要求]
你可以使用实例或其他论述方法支持你的论点,也可以参照阅读材料的内容,但不得直接引用阅读材料中的句子。
高二英语书面表达中等难度题查看答案及解析
John, may I use your computer now?
Sorry, it is not ____at the moment. It is being repaired.
A. convenient B. valuable C. available D. comfortable
高二英语单项填空简单题查看答案及解析
Sometimes people just believe what they see, ______the reality may be different.
A. as if B. even though C. since D. unless
高二英语单项填空中等难度题查看答案及解析
How to Read a Book
Books can be your best friends.1.They can introduce you to things you may never see …But do you know how to read them in order to get the fullest enjoyment possible? The following tips should help.
◆2.Look in the library or in one of the large bookstores.You could also ask friends if you could have a look at their book shelves. Search the shelves until you find a book that looks good.Read the first page to see how it reads, and the cover text on the back of the book, if it has any.If you are already concentrating,then buy it or borrow it.
◆Do not start to read it until you have the time.3.And set aside time to do nothing else but read,as it can be,at times,suspenseful(悬疑的),exciting and relaxing.
◆Get comfortable on the couch.Have a lamp behind you, lighting the area where you are reading.Make sure the television is off and that anything else that could distract(使分心) you has been attended to.4.
◆Start the book by turning the pages and really enjoy it.Do not think about anything else but what you are reading.Put yourself into the action or location in the story.Once you concentrate completely, it will be difficult to put the book down.And remember that reading is not running your eyes over a book.5.However,if you need to read the book quickly,then you do not need to pay attention to every word.
A. Find a book.
B. Look for a place.
C. Otherwise, you will miss it.
D. You should read it actively and enjoy it completely.
E. They can take you to places that you may never go.
F. Get warm if you are going to be sitting still for a few hours.
G. If you are busy doing other things, you should wait until you have finished them.
高二英语七选五中等难度题查看答案及解析
Though plastic shopping bags are cheap and useful, they cause widespread pollution. Now, we may have an unlikely helper to help clean up our garbage — a small wax worm.
The worm’s hidden skills were discovered by accident. About two years ago, Federica Bertocchini, a developmental biologist at the Spanish National Research Council and an amateur beekeeper, was cleaning out bees’ nest that had been filled with worms. She removed the worms and put them in a plastic bag while doing the cleaning. After finishing, she went back to the room where she had left the worms, and found they had escaped from the bag. When she checked, she saw that the bag was full of holes.
Realizing she may have made an important discovery, Bertocchini teamed up with other researchers to conduct further research. They began by placing 100 worms on some plastic bags and discovered that over a 24-hour period, the worms managed to chew through 92 milligrams of plastic. The researchers make an appropriate judgment that at this rate, the group of worms could degrade (降解) an average-sized 5.5-gram plastic bag within a month. To rule out the possibility that chewing was causing the degradation, the researchers spread the soft wet substance inside the body of some recently dead worms on a sheet of plastic. Sure enough, even the liquid was able to eat through the material, confirming that the worms have plastic-digesting enzymes (酶).
While the news is certainly encouraging, not everyone is convinced. The Michigan State University’s Ramani Narayan believes the tiny pieces of microplastics released by the plastic-eating worms would pick up harmful substances and transport them up the food chain, causing, even more, harm to the environment and human health. Susan Selke, director of Michigan State University School of Packaging, is concerned that the worms will not be able to survive in an oxygen-free landfills where large amounts of waste material are buried under the earth.
However, Bertocchini is not planning to transport worm armies to landfills. Instead, the researcher wants to identify the enzyme that helps degrade the plastic. The researcher says, maybe we can find the molecule (分子) and produce it on an industrial level, rather than using a million worms in a plastic bag.
1.What did the experiment of using dead worms find out?
A.Worms’ chewing may cause the degradation.
B.A plastic-eating chemical exists in wax worms.
C.Dead worms are effective in dealing with plastic.
D.It takes a long time for worms to degrade plastic.
2.What is Ramani Naravan's attitude to Bertocchini's finding?
A.Objective B.Convinced C.Questioning. D.Optimistic.
3.What might Bertocchini focus her later research on?
A.The structure of plastic-degrading enzymes.
B.The use of other worms in disposing plastic.
C.Wax worms’ adaptability to the landfill environment.
D.The chance of producing wax worms on a large scale.
4.What is the best title for the text?
A.Can wax worms save the environment?
B.Wax worms have an appetite for plastic.
C.Why do wax worms have plastic-eating skills?
D.Hungry worms join the fight against plastic pollution
高二英语阅读理解中等难度题查看答案及解析
Babies are not just passing idle time when they stare goggle-eyed at the television—they are actually learning about the world, U.S. researchers said. Parents may want to limit what their babies see on television , based on the study, said Donna Mumme, assistant professor of psychology at Tufts University in Boston, who led the research. “Children as young as 12 months are making decisions based on the emotional(情感的)reactions of adults around them,” Mumme said in a statement. “It turns out they can also use emotional information they pick up from television. This means that adults might want to think twice before they speak in a loud and harsh voice or let a baby see television programs meant for information about the world. A mother urging her baby to eat some “yummy” soup or a brother crying in fear when a dog approaches can influence a baby’s reaction. Mumme’s team tested babies to determine. If television has the same influence, showing actors reacting on a videotape to objects such as red spiral letter holder, a blue bumpy ball, and a yellow garden hose attachment. Babies aged 10 months or 12 months were later given the same objects to play with. Ten-month-olds did not seem to be influenced by the video but the 1-year-olds were. When the actors acted neutrally or positively to an object, the babies happily played with them. But if the actor had seemed afraid or disgusted, the babies would avoid the object.
1.Psychology is the study of .
A.human’s society and its growth
B.human’s hopes had dreams
C.human’s mind and behaviors
D.human’s languages and cultures
2.Which of the following is Mumme’s conclusion?
A.Small babies should not be allowed to watch television programs.
B.Adults need to think twice before they act in front of small babies.
C.TV programs provide small babies with all the information they need.
D.One-year-olds can be emotionally influenced by TV programs.
3.Mumme reached his conclusion by .
A.measuring the time babies spent in front of TV.
B.making TV programs and advertisements for kids.
C.showing actors how to react to blue bumpy balls
D.observing small babies’ reactions to TV programs
4.Which of the following may the study lead to according to the researchers?
A.Parents may want to limit what their babies see on television.
B.Actors may try to behave themselves well in front of babies.
C.Babies may be allowed to choose what they see on TV.
D.Scientists may stop ignoring babies’ emotional world.
高二英语阅读理解简单题查看答案及解析
During the week days,they are luckily busy office people; but on weekends,they are just a brood of(一窝)stay home animals.A recent survey shows that office workers in China prefer quiet and easy ways to spend their weekends.
In the survey,conducted by job seeking and offering website Zhaopin.com,32.8 percent of the 6000 respondents choose to stay home at weekends and have a good rest,the Beijing Morning Post reported.
Twenty percent use their days off to do housework. And only 19.3 percent are willing to have fun during the break time from work.Their first choice of fun is shopping. Other choices,though practiced by few,include meeting friends,accompanying the children,trips to the suburbs,and lessons for more skills. When they go shopping,54.5 percent of the white collars actually shop in supermarkets,while 27.9 percent attend other stores,especially when discounts are offered. These activities don’t seem to cost much,as 60 percent spend average less than 200 yuan(US$26)during weekends,and 30 percent no more than 500 yuan.
When asked whom they would spend the weekends with,about 40 percent mention their partners,and 30 percent prefer a weekend all by themselves.Less than 20 percent hang out with friends. Only 5.8 percent would kill the time with their colleagues.This is because we tend to avoid too many personal contacts with our coworkers when we don’t have to work with them,according to some experts.
1.How many of the office workers who are the respondents do the housework at weekends?
A.1968. B.1158. C.1200. D.1674.
2.Why will less than ten percent of office workers kill the time with their colleagues at weekends?
A.Because they can’t spare time to play with them.
B.Because they tend to avoid too many personal contacts with them when they don’t have to.
C.Because they have many things to deal with at weekends.
D.Because some experts suggest they should not keep in touch with their colleagues.
3.Which of the following is TRUE according to the survey?
A.There is the same percentage about people preferring a weekend all by themselves and people spending no more than 500 yuan during weekends.
B.Most office workers can’t afford things in supermarkets,so they prefer to attend other stores,especially when discounts are offered.
C.More than one fifth of office workers like to hang out with friends.
D.All the office workers prefer to relax themselves and no one is willing to learn more skills.
4.What is the best title of the passage?
A.How to spend the weekends
B.Several ways of spending their weekends for office people
C.How to go shopping on the weekends for office people
D.Office people prefer easy weekends
高二英语阅读理解困难题查看答案及解析