When people talk of a virus these days, chances are that they are talking about computer virus that have the power wipe out all the valuable work people may have stored in their computers. Imagine, the virus has the power to make military systems, giant banks, airports, hospitals and traffic system come to stop!
What does a computer virus do? It targets electronic objects that are programmed. The virus spreads through connections between these electronic objects. For virus spreading experts, e-mail is a favorite method of sending their destructive (破坏性的) weapon.
But scientists warn that this is not the worst that can happen. There is more. People are also connected through phones. The next virus may actually target mobile phones, especially those that are programmed to do many tasks apart from just communicating. It would then be easy for a virus to infect those programs and create major disorder.
For example, these virus may have the power to record your phone conversations and make others hear them. They create problems with your electronic money accounts, or they could create a mountain of telephone bills for calls you never made. And that would be a disaster. A report on this was published in the New Scientist recently.
One way out would be to have simpler phones with not so many different functions. This would mean there would mean there would be fewer programs for the virus to attack. But mobile phone producers are in a fix. People on longer want an electronic item to perform just one task. They want more and more functions added. That would mean more software programs to make the mobile phone perform all those functions. And that means the possibility of more viruses.It can be inferred from the passage that ______.
| A．computer viruses are not so as destructive as mobile phone viruses |
| B．people should be careful when receiving e-mails |
| C．people find it difficult to use electronic equipment correctly |
| D．having electronic money accounts brings people a lot of convenience |
Which of the following shows that your mobile phone is infected with a virus?
| A．You can’t hear the person who answers the phone clearly |
| B．You can’t send e-mails with your mobile phone |
| C．your phone bill increases for unknown reasons |
| D．You can hear other people’s phone conversations |
What does the underlined sentence in the last paragraph mean?
| A．Mobile phone producers have made no progress. |
| B．Mobile phone producers are proud of their products. |
| C．Mobile phone producers are faced with a difficult situation. |
| D．Mobile phone producers refused to fight against virus. |
For whom is the passage written?
| A．Government officials | B．Virus spreading experts |
| C．Electronic scientists | D．Mobile phone users |
阅读下列短文，从每题所给的四个选项(A、B、C和D)中, 选出最佳选项。
According to the US government, wind farms off the Pacific coast could produce 900 gigawatts of electricity every year．Unfortunately, the water there is far too deep for even the tallest windmills to touch bottom．An experiment under way off the coast of Norway, however, could help put them anywhere．
The project, called Hywind, is the world’s first large-scale deepwater wind turbine (涡轮发电机)．Although it uses a fairly standard 152-ton, 2．3-megawatt turbine, Hywind represents totally new technology．The turbine will be fixed 213 feet above the water on a floating spar, a technology Hywind’s creator, the Norwegian company StatoilHydro, has developed recently．The steel spar, which is filled with stones and goes 328 feet below the sea surface, will be tied to the ocean floor by three cables ; these will keep the spar stable and prevent the turbine from moving up and down in the waves．Hywind’s stability in the cold and rough sea would prove that even the deepest corners of the ocean are suitable for wind power．If all goes according to the plan, the turbine will start producing electricity six miles off the coast of southwestern Norway as early as September．
To produce electricity on a large scale, a commercial wind farm will have to use bigger turbines than Hywind does, but it’s difficult enough to balance such a large turbine so high on a floating spar in the middle of the ocean．To make that turbine heavier, the whole spar’s center of gravity must be moved much closer to the ocean’s surface．To do that, the company plans to design a new kind of wind turbine, one whose gearbox (变速箱) sits at sea level rather than behind the blades．
Hywind is a test run, but the benefits for perfecting floating wind-farm technology could be extremely large．Out at sea, the wind is often stronger and steadier than close to shore, where all existing offshore windmills are planted．Deep-sea farms are invisible from land, which helps overcome the windmill-as-eyesore objection．If the technology catches on, it will open up vast areas of the planet’s surface to one of the best low-carbon power sources available．The Hywind project uses totally new technology to ensure the stability of_________.
| A．the cables which tie the spar to the ocean floor |
| B．the spar which is floating in deep-sea water |
| C．the blades driven by strong and steady sea wind |
| D．the stones filled in the spar below the sea surface |
To balance a bigger turbine high on a floating spar, a new type of turbine is to be designed with its gearbox sitting_________.
| A．on the sea floor |
| B．on the spar top |
| C．at sea level |
| D．behind the blades |
Wide applications of deepwater wind power technology can_________.
| A．solve the technical problems of deepwater windmills |
| B．make financial profits by producing more turbines |
| C．settle the arguments about environmental problems |
| D．explore low-carbon power resources available at sea |
As a society we might want to rethink the time and money spent on education，so that these resources can benefit a greater percentage of the population．Ideally，both high schools and colleges can prepare individuals for the ever-changing roles．
High school degrees offer far less in the way of preparation for work than they might，or than many other nations currently offer，creating a growing skills gap in our economy．We encourage students to go on to college whether they are prepared or not，or have a clear sense of purpose or interest，and now have the highest college dropout rate in the world．
We might look to other countries for models of how high schools can offer better training，as well as the development of a work ethic(美德)and the intellectual skills needed for continued learning and development．
Meanwhile，the liberal arts(人文学科)become more important than ever．In a knowledge economy where professional roles change rapidly and many college students are preparing for positions that may not even exist yet，the skill needed is one that prepares them for change and continued learning．
Learning to express ideas well in both writing and speech，knowing how to find information，and knowing how to do research are all solid background skills for a wide variety of roles，and such training is more important than any particular major in a liberal arts college．We need to continue to value broad preparation in thinking skills that will serve for a lifetime．
Students also need to learn to work independently and to make responsible decisions．The lengthening path to adulthood appears exacerbated（恶化）by parental involvement in the college years．Given the rising investment in college education，parental concern is not surprising，but learning where and when to intervene will help students take more ownership of the outcomes of these increasingly costly educations．What kind of education does the author think is ideal？
| A．It benefits the great majority of the general population． |
| B．It prepares students to meet the future needs of society． |
| C．It encourages students to learn throughout their lives． |
| D．It ensures that students’ expectations are successfully fulfilled． |
What is the feature of a knowledge economy?
| A．People have to receive higher education to qualify for a professional position． |
| B．Students majoring in liberal arts usually have difficulty seeking a job． |
| C．New positions are constantly created that require people to keep learning． |
| D．Colleges find it hard to teach students how to cope with the changing economy． |
According to the author，a liberal arts college should focus on________？
| A．solid background knowledge in a particular field |
| B．practical skills urgently needed in current society |
| C．basic skills needed for change and lifelong learning |
| D．useful thinking skills for advanced academic research |
What suggestion does the author offer to parents？
| A．Rethinking the value of higher education． |
| B．Investing wisely in their children’s education． |
| C．Helping their children to bring their talent into full play． |
| D．Avoiding too much intervention in their children’s education． |
Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body． Raw and whole foods are usually digested more efficiently than cooked and refined foods．
When we cook foods，we destroy the natural enzymes(酶)that are part of the food in its raw form．These enzymes were intended by nature to help us digest the food．When we consume food without these natural enzymes，our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream．In both instances，the result is obesity．When too many nutrients are absorbed at once，the body grows fat．
Processed foods contain chemical elements，which might confuse the appetite mechanism that tells us when we’ve had enough to eat；as a result，people often overeat．Processed foods also upset the digestive cycle．The body will either identify these foods as allergens(过敏原)and then store them safely away from the organs as fat，or the remains of undigested food will become acidic and enter the bloodstream as acid waste，which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body's cells．The body's metabolism(新陈代谢)becomes inactive，and the result is weight gain and obesity．
To stop this vicious circle in its tracks，people need to consume food and supplements that will neutralize the acid already accumulated in body．Eating the right types of raw and whole foods can help．It’s also important to restore your enzyme balance．You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production．If you truly want to change and help your body heal itself，you need to take an active approach．
It can be inferred from Para．2 that________．
| A．foods with natural enzymes help people keep fit |
| B．we’d better be cautious about raw and whole foods |
| C．it is essential for people to protect their vital organs |
| D．giving up cooked and refined foods is a new lifestyle |
Processed foods are unhealthy because they________．
| A．destroy body's cells |
| B．may lead to obesity |
| C．are difficult to digest |
| D．stop body's metabolism |
What is the main purpose of this passage？
| A．To warn people of the problem of obesity． |
| B．To advocate eating more raw and whole foods． |
| C．To inform people of the harm of processed foods． |
| D．To tell the differences between raw and processed foods． |
The underlined word “vicious” in the last paragraph probably means________．
| A．violent | B．progressive | C．harmful | D．positive |
Dear David，
I’m glad you would like to share your feelings with me．It’s hardly surprising that your feelings of not being “grown up” have come on strongly at this point in your life，just before you’re about to become a father．You are asking：will I make a good father？How will I cope?
Should I have brought another little person into the world? Can l provide for it? Help! I think nearly every sensitive about-to-be-parent must have these occasional feelings of self-doubt and inadequacy(不适)before the birth and it would be most unusual if you didn't share them．It's difficult，honestly，to feel grown-up unless you have something less grown-up to relate to．
The boss with a hen-pecking wife may feel like a seven-year-old when he’s at home．But as he walks through the office door，and knows he’s going to be surrounded by staff looking to him for Advice，he grows into a fully mature man．And I think it’s a mistake to imagine that we all feel，as we age，a kind of progression of states，from the baby to the adult．Most people feel，on Tuesday，about three years old，and on a Wednesday，around 80．
There's a common remark that “all men are little boys”，but it's not true．It's more true that men often behave like little boys．But nearly all people，at some moments in their lives，are capable of groat maturity．
Once your baby arrives，you’ll soon feel less childlike，or rather，less often．When your child tries to put its fingers into the electric plug，the adult in you will rise up to prevent it．You’ll see
you have very little in common with a needy child，particularly if it's looking to you for comfort and support．
Comfort yourself，David，with two truths．One is that your friends laugh when they talk about this subject because they，like you，feel frightened．And remember that people who haven't grown up don’t go around talking about the fact that they don’t feel grown-up．
Hope my advice will be helpful and good luck to you and your little one．
Yours sincerely
Miss Advice
According to the passage，Miss Advice thinks David's self-doubt is________．
| A．valuable | B．natural | C．unusual | D．bearable |
From Paragraph 2，we can learn that people's sense of maturity________．
| A．will increase with age |
| B．is obviously seen at home |
| C．changes with different situations |
| D．becomes stronger with familiar people |
Miss Advice holds that________．
| A．all men behave like little boys |
| B．people tend to laugh at the subject |
| C．men with a baby feel more grown-up |
| D．people enjoy talking about their immaturity |
Miss Advice wrote the letter to________
| A．offer suggestions to a future father |
| B．teach people how to grow up |
| C．encourage people to be responsible |
| D．solve problems of the less grown-up |
Owning a smartphone may not be as smart as you think．They may let you surf the Internet，listen to music and snap photos wherever you are．．．but they also turn you into a workaholic，it seems．A study suggests that，by giving you access to emails at all times．the all-singing．all-dancing mobile phone adds as much as two hours to your working day．
Researchers found that Britons work an additional 460 hours a year on average as they are able to respond to emails on their mobiles．The study by technology retailer Pixmania，reveals the average UK working day is between nine and ten hours，but a further two hours is spent responding to or sending work emails，or making work calls．Almost one in ten admits spending up to three hours outside their normal working day checking work emails．Some workers confess they are on call almost 24 hours a day，with nine out of ten saying they take work emails and calls outside their normal working hours．Nearly two-thirds say they often check work emails just before they go to bed and as soon as they wake up，while over a third have replied to one in the middle of the night．
Ghadi Hobeika，marketing director of Pixmania，said：“The ability to access literally millions of apps，keep in contact via social networks and take photos and video as well as text and call has made smartphones valuable for many people．However，there are drawbacks．Many companies expect their employees to be on call 24 hours a day，seven days a week，and smartphones mean that people literally cannot get away from work．The more constantly in contact we become。The more is expected of us in a work capacity．”The text is probably taken from___________．
| A．a scientific report |
| B．a financial report |
| C．a newspaper |
| D．a literary journal |
The underlined word “drawbacks” in the last paragraph probably means_________．
| A．advantages | B．faults | C．mistakes | D．features |
Ghadi may agree that___________．
| A．employees are supposed to be on call 24 hours a day |
| B．the ability to access many apps made smartphones worthless |
| C．smartphones might turn a person into a workaholic |
| D．people literally cannot get away from work without smartphones |
What is the main idea of this passage？
| A．Smartphones are lengthening working hours |
| B．Smartphones are becoming valuable for many people |
| C．Britons work art additional 460 hours a year on average |
| D．Smartphones are more beneficial to our life than we think |
粤公网安备 44130202000953号