The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference. The source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic device such as portable computers, radio and cassette players and mobile telephones.
RTCA, an organization which advises the aviation (航空) industry, has recommended that all airlines ban such devices from being used during “critical” stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights.
The difficulty is predicting how electromagnetic fields might affect an aircraft’s computers. Experts know that portable device emit radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not.
The fact that aircraft may be vulnerable to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can’t hear the instructions to turn off his radio because the music’s too loud.
1.The passage is mainly about _____.
A.a new regulation for an airlines
B.the drawbacks of electronic devices
C.a possible cause of aircraft incidents
D.effective safety measures for air flight
2.What is said about the over 100 aircraft incidents in the past 15 years?
A.They may have been caused by the damage to the radio systems.
B.They may have taken place during take-off and landing.
C.They were proved to have been caused by the passengers’ portable computers.
D.They were suspected to have resulted from electromagnetic interference.
3.Few airlines want to impose a total ban on their passengers using electronic devices because ______.
A.they don’t believe there is such a danger as radio interference
B.the harmful effect of electromagnetic interference is yet to be proved
C.most passengers refuse to take a plane which bans the use of radio and cassette players
D.they have other effective safety measures to fall back on
4.It can be inferred from the passage that the author _____.
A.hasn’t expressed his own opinion on this problem
B.has overestimated the danger of electromagnetic interference
C.is in favor of prohibiting passengers’ use of electronic devices completely
D.regards it as unreasonable to exercise a total ban during flight
高三英语阅读理解困难题
The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference. The source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic device such as portable computers, radio and cassette players and mobile telephones.
RTCA, an organization which advises the aviation (航空) industry, has recommended that all airlines ban such devices from being used during “critical” stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights.
The difficulty is predicting how electromagnetic fields might affect an aircraft’s computers. Experts know that portable device emit radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not.
The fact that aircraft may be vulnerable to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can’t hear the instructions to turn off his radio because the music’s too loud.
1.The passage is mainly about _____.
A.a new regulation for an airlines
B.the drawbacks of electronic devices
C.a possible cause of aircraft incidents
D.effective safety measures for air flight
2.What is said about the over 100 aircraft incidents in the past 15 years?
A.They may have been caused by the damage to the radio systems.
B.They may have taken place during take-off and landing.
C.They were proved to have been caused by the passengers’ portable computers.
D.They were suspected to have resulted from electromagnetic interference.
3.Few airlines want to impose a total ban on their passengers using electronic devices because ______.
A.they don’t believe there is such a danger as radio interference
B.the harmful effect of electromagnetic interference is yet to be proved
C.most passengers refuse to take a plane which bans the use of radio and cassette players
D.they have other effective safety measures to fall back on
4.It can be inferred from the passage that the author _____.
A.hasn’t expressed his own opinion on this problem
B.has overestimated the danger of electromagnetic interference
C.is in favor of prohibiting passengers’ use of electronic devices completely
D.regards it as unreasonable to exercise a total ban during flight
高三英语阅读理解困难题查看答案及解析
The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with portable computer in business class. In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference. The source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic devices such as portable computers, radio and cassette players and mobile telephones.
RTCA, an organization which advises the aviation (航空) industry, has recommended that all airlines ban such devices from being used during “critical” stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are reluctant(不情愿的) to enforce (实施) a total ban, given that many passengers want to work during flight.
The difficulty is predicting how electromagnetic fields might affect an aircraft’s computers. Experts know that portable devices emit(发出) radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not.
The fact that aircraft may be vulnerable (易受损的) to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can’t hear the instructions to turn off his radio because the music’s too loud.
1.The passage is mainly about ________.
A.a new regulation for all airlines B.the defects of electronic devices
C.a possible cause of aircraft crashes D.effective safety measures for air flight
2.What is said about the over 100 aircraft incidents in the past 15 years?
A.They may have been caused by the damage to the radio systems.
B.They may have taken place during take-off and landing.
C.They were proved to have been caused by the passengers portable computers.
D.They were suspected to have resulted from electromagnetic interference.
3.Few airlines want to impose a total ban on their passengers using electronic devices because ________.
A.they don’t believe there is such a danger as radio interference
B.the harmful effect of electromagnetic interference is yet to be proved
C.most passengers refuse to take a plane which bans the use of radio and cassette players
D.they have other effective safety measures to fall back on
4.Why is it difficult to predict the possible effects of electromagnetic fields on an airplane s computers?
A.Because it is extremely dangerous to conduct such research on an airplane.
B.Because it remains a mystery what wavelengths are liable to be interfered with.
C.Because research scientists have not been able to produce the same effects in labs.
D.Because experts lack adequate equipment to do such research.
高三英语阅读理解中等难度题查看答案及解析
The biggest danger facing airlines nowadays may not be a terrorist with a gun, but the man with portable computer in business class. In the last 16 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference (电磁干扰). The source of this interference remains not proved, but increasingly, experts are pointing the blame at portable electronic devices such as portable computers, radio and cassette players and mobile telephones.
RTC.A. an organization which advises the aviation (航空 )industry, has suggested that all airlines ban such devices from being used during "critical" stages of flight particularly take- off and landing. Some experts have gone further, calling for a total ban during all flights .Cur- rently , rules on using these devices are left up to individual airlines. And although some air- lines prevent passengers from using such equipment during take-off and landing, most are un- willing to carry out a total ban, given that many passengers want to work during flight.
The difficulty is predicting how electromagnetic fields might affect an aircraft's computers. Experts know that portable devices send out radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory. they have no way of knowing whether the interference might be. dangerous or not.
The fact that aircraft may be fragile to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can 't hear the instructions to turn off his radio because the music's too loud.
1.What is said about the over 100 aircraft incidents in the past 16 years?
A. They may have been caused by the damage to-the radio systems.
B. They may have taken place during take-off and landing.
C. They were proved to have been caused by the passengers portable computers.
D. They were suspected to have resulted from electromagnetic interference.
2.Why is it difficult to predict the possible effects of electromagnetic fields on an airplane 's computers?
A. Because it is extremely dangerous to conduct such research on an airplane.
B. Because it remains a mystery what wavelengths are liable to be interfered with.
C. Because research scientists have not been able to produce the same effects in labs.
D. Because experts lack adequate equipment to do such research.
3.Few airlines want to perform a total ban on their passengers using electronic devices because_______
A. they don't believe there is such a danger as radio interference
B. the harmful effect of electromagnetic interference is yet to be proved
C. most passengers refused to take a plane ,which bans the use of radio and cassette players
D. they have other effective safety measures to fall back on
4.The passage is mainly about_________.
A. a new rule for all airlines
B. the disadvantages of electronic devices
C. a possible cause of aircraft incidents
D. effective safety measures for air flight
高三英语阅读理解困难题查看答案及解析
Things Your Pilot Won't Tell You
You may not be getting the airline you paid for.
You may go to an airline website and buy a ticket, and get onto an airplane that has a similar name painted on it, but half the time, you're really on a regional (地方的) airline.The regionals aren't held to the same safety standards as the majors: their pilots aren't required to have as much training and experience, and the public doesn't know that.
—Captain at a major airline
If you're a nervous flier, book a morning flight.
The heating of the ground later causes bumpier (颠簸的) air, and it's much more likely to thunderstorm in the afternoon.
—Jerry Johnson , pilot, Los Angeles
The smoothest place to sit is often over or near the wing.
The bumpiest place to sit is in the back.If you're in the middle, you don't move as much.
—Patrick Smith, pilot, and author of Cockpit Confidential
Sit in the front if you want fresher air.
The general flow of air in any airplane is from front to back.So if you're really concerned about breathing the freshest possible air or not getting too hot, sit as close to the front as you can.Planes are generally warmest in the back.
—Tech pilot at a regional airline, Texas
You never know where the safest seat is.
There is no safest place to sit.In one accident, the people in the back are dead; in the next, it's the people up front.
—John Nance, aviation safety analyst and retired airline captain, Seattle
I've been struck by lightning twice.
Most pilots have.Airplanes are built to take it.You hear a big boom and see a big flash and that's it.You're not going to fall out of the sky.
—Charlotte, pilot for a regional earner,.North Carolina
People don't understand why they can't use their cell phones.
Well, what can happen is 12 people will decide to call someone just before landing, and I can get a false reading on my instruments saying that we are higher than we ideally are.
—Jim Tilmon, retired American Airlines pilot, Phoenix
1.Jerry Johnson advises nervous fliers to ______.
A.sit in the back
B.fly in the morning
C.fly with major airlines
D.avoid flying in bad weather
2.The best seats for those who need fresh air are ______.
A.in the front B.in the middle
C.in the back D.near the wing
3.Passengers' use of cellphones before landing is likely to ______.
A.increase the risk of being struck by lightning
B.make it difficult for pilots to control the plane
C.cause the instruments of the plane to break down
D.affect pilots' judgment about the height of the plane
高三英语阅读理解中等难度题查看答案及解析
One of the biggest challenges1.(face) students today is how to concentrate on studies.Almost all of them are struggling for their concentration power.In an age2.mobile phones and Internet are eating up most of our time and energy,one can understand how different it is to focus attention and energy on studies.
One of the most important3.(factor) for developing concentration on a task,whether it is study or anything else,4.(be) to develop an interest in that task.We are able to focus5.(easy)and more long periods of time on tasks that we find more interesting.If you ever want to concentrate on anything and studies are no6.(expect),you need7.(ensure) that the environmental around you is distraction(注意力分散)free.So the question is not how to concentrate on studies8.how to avoid distractions that have swallowed up mankind today.The only way to guarantee9.distraction free environment is by getting rid of all the unnecessary things around you,including the electronic gadgets(小器具)10.mobile phones.
高三英语短文填空中等难度题查看答案及解析
The new world of today introduced new threats that were not known in the previous generations: Internet predators(掠夺者). Often we do a lot of our researching, shopping, talking; just about everything online nowadays. New advancements in revolution comes along with the unwanted attackers. There are people out there who gain pleasure from, interrupting and taking from our peaceful lives what’s not rightfully theirs. But like with everything, there are indeed counteractive measures that can be set in place to fend off these predators from such damage. I’d like to introduce the Guardian Eye.
Within this program is a complex program which has several functions to create a safe atmosphere for whomever uses the computer, It has the ability to track and log every key stroke, every website that has ever been accessed, takes screenshots of web pages, blocks web pages according to content and even sends you messages via email once conspicuous(可疑的) activity has been reported and logged. Just think, you or child could be browsing and searching through the Internet and inappropriate content pops up with several different windows. You try to click out of the windows but you accidentally click one which releases spyware, infecting your computer. Guardian Eye blocks unwanted content from popping up or appearing to the users, which I thought was extremely convenient. In this way there is not even the slightest temptation.
This product helps prevent damage from being done to your computer and worse, your identity. It’s quite the product and it offers a little version so you may try it out first. If you’d like the full package, it’s a once time fee 39.99 and can be installed on unlimited computers for your convenience. It’s a nice deal and I’m considering getting it again considering I do a lot of writing on various websites myself.
1. In what way is Guardian Eye most useful to kids?
A. It stops them from opening too many windows.
B. It makes them aware of conspicuous activity.
C. It keeps them from seeing unwanted contents.
D. It stops spyware from entering the computer.
2. We can infer from the last paragraph?
A. you have to pay for Guardian Eye every year.
B.the author has never used Guardian Eye.
C. you can use Guardian Eye for free.
D. Guardian Eye is economical to use
3. For what purpose does the author writer the text?
A. To recommend a software to us.
B. To describe how to use a software.
C. To ask us to pay attention to online safety.
D. To tell us how to fend off online predators.
高三英语阅读理解中等难度题查看答案及解析
Watching wooden dolls come to life may not be one of the most popular forms of entertainment today, but with over twenty years’ experience, talented puppeteer (木偶表演者) Peter Roberts has earned himself the title “master puppeteer” because of his great ability to turn puppets into believable, almost living characters. “People are quite often surprised to hear what I do for living and have little appreciation of puppy as a form of entertainment. But while the exact origins of puppet theatre are unknown, it has been popular in many cultures and may have been the very first kind of theatre,” he explains.
Roberts’ shows are highly original. “A puppet show can involve anything from clowning(傻逗) to storytelling,” he says, Equally diverse are the audiences he performs for. “Some are attracted by the puppets themselves, while others enjoy the dialogue.” Roberts believes that this form of entertainment can be appreciated by people of all ages and cultures.
Roberts’ interest in puppets started when he received some beautiful glove puppets one Christmas. He started putting on shows with these for family and friends and then moved on to handmade Chinese string puppets. Learning mostly from books and personal experience, he explains, “I was already spending most of my free time carving puppets and putting on shows, so I hardly noticed the change from students to full-time professional puppeteer.”
The puppets are designed specifically for each show, which is extremely time consuming. According to Roberts, “Sometimes what you expect and what you actually create in the end are two very different things. I’ve made some of my best puppets ‘accidentally’.”
When most people hear the word “puppetry”, they more than likely think of a way of keeping children entertained at birthday parties. Certainly the subject matter will be expected to be light-hearted rather than serious. However, Roberts wants to point out that puppets come serious messages sometimes.” he says.
1.What do we know about puppetry in the first paragraph?
A. It is a most popular form of entertainment.
B. It cannot give people pleasure any more.
C. It was first brought to life by Peter Roberts.
D. Its value as an art form is not fully recognized.
2.In Roberts’ eyes, his puppet shows .
A. usually attract people full of humor
B. are most something for old aged audience
C. display something meaningful for different people
D. involve hard work and great intelligence
3.Roberts developed an interest in puppets because of .
A. the puppet show books
B. his university major
C. a Christmas gift
D. some Chinese string puppets
4.What does Roberts want people to think of puppet theatre?
A. It is just a kind of entertainment for kids.
B. It can be educational as well as entertaining.
C. It is only a kind of serious art form.
D. It should be kept light-hearted.
高三英语阅读理解中等难度题查看答案及解析
Watching wooden dolls come to life may not be one of the most popular forms of entertainment today, but with over twenty years’ experience, talented puppeteer (木偶表演者) Peter Roberts has earned himself the title “master puppeteer” because of his great ability to turn puppets into believable, almost living characters. “People are quite often surprised to hear what I do for a living and have little appreciation of puppy as a form of entertainment. But while the exact origins of puppet theatre are unknown, it has been popular in many cultures and may have been the very first kind of theatre,” he explains.
Roberts’ shows are highly original. “A puppet show can involve anything from clowning(傻逗) to storytelling,” he says. Equally diverse are the audiences he performs for. “Some are attracted by the puppets themselves, while others enjoy the dialogue.” Roberts believes that this form of entertainment can be appreciated by people of all ages and cultures.
Roberts’ interest in puppets started when he received some beautiful glove puppets one Christmas. He started putting on shows with these for family and friends and then moved on to handmade Chinese string puppets. Learning mostly from books and personal experience, he explains, “I was already spending most of my free time carving puppets and putting on shows, so I hardly noticed the change from students to full-time professional puppeteer.”
The puppets are designed specifically for each show, which is extremely time consuming. According to Roberts, “Sometimes what you expect and what you actually create in the end are two very different things. I’ve made some of my best puppets ‘accidentally’.”
When most people hear the word “puppetry”, they more than likely think of a way of keeping children entertained at birthday parties. Certainly the subject matter will be expected to be light-hearted rather than serious. However, Roberts wants to point out that puppets convey serious messages sometimes.” he says.
1.What do we know about puppetry in the first paragraph?
A. It is a most popular form of entertainment.
B. It cannot give people pleasure any more.
C. It was first brought to life by Peter Roberts.
D. Its value as an art form is not fully recognized.
2.In Roberts’ eyes, his puppet shows .
A. usually attract people full of humor
B. are most something for old aged audience
C. display something meaningful for different people
D. involve hard work and great intelligence
3.Roberts developed an interest in puppets because of .
A. the puppet show books B. his university major
C. a Christmas gift D. some Chinese string puppets
4.What does Roberts want people to think of puppet theatre?
A. It is just a kind of entertainment for kids.
B. It can be educational as well as entertaining.
C. It is only a kind of serious art form.
D. It should be kept light-hearted.
高三英语阅读理解中等难度题查看答案及解析
The police at Denver International Airport examined a bomb threat against a United Airlines flight to San Francisco,____________ the flight for hours.
A.delayed | B.to delay | C.delaying | D.had delayed |
高三英语单项填空中等难度题查看答案及解析
Market analysts in the United States have recently been quoted as saying that the biggest threat to the luxury (奢侈品) industry in the US is the tech industry. This is according to an article by fellow journalist Ashley Lutz. Her suggestion is sound. The main idea of her article is that products from Tiffany & Co. find their biggest competition not from other luxury brands but from companies like Apple. Lutz points out that luxury products are often only for “show,” while the attraction behind tech products is functionality.
You find few people in the United States today willing to purchase luxury goods at full price. It didn’t use to be that way. Luxury goods used to be actually exclusive. That meant you needed to travel to the right store to purchase them, and you didn’t even have the option of getting a deal.
Today, no one wants to pay full price for luxury goods. People have the unfortunate belief that fakes (赝品) somehow are equal to originals, and if you can’t get a deal on eBay, Amazon, or in an outlet store, purchasing a luxury product probably isn’t worth it. Luxury brands struggle to remain high-end (高档的) images despite the reality that the American consumer is motivated much more by discounts than they are by brand names or image.
Yet people stand in line to pay full price for a new product from Apple and crowds gather to hear about a new smart phone. While electronics are updating every day, people are purchasing technology at full prices much more than they are purchasing luxury goods. What are high-tech makers doing right that luxury makers are pitifully failing at?
Carefully looking at the situation, it would appear as if the Internet didn’t hurt the luxury industry, expectation from the consumers did. What people want these days more than anything is stuff that does something. They want cars that drive, shoes that are comfortable, games that are fun to play, screens that are beautiful to look at, tools that are useful, and entertainment that is entertaining. Little of that fits into what the luxury industry has typically offered with its status, image, and fine materials. The sad reality is that luxury products aren’t that luxury any more.
1.What does this passage mainly talk about?
A. Nobody likes luxury goods any more.
B. Luxury goods are of poor quality nowadays.
C. Tech products become the new “luxury goods”.
D. Iphones have taken the place of luxury products.
2.The underlined word “exclusive” in paragraph 2 means _______.
A. unique and with no bargain B. low in price
C. hard to find D. easy to sell
3.From paragraph 3 we can know that _______.
A. people have found that some luxury goods are fakes
B. people can buy luxury goods at a low price on eBay
C. luxury brands will give up high-end images
D. consumers prefer brand names to discounts
4.What do people pay most attention to nowadays?
A. The Internet service. B. The images of luxuries.
C. The function of products. D. The expectation from the consumers.
高三英语阅读理解中等难度题查看答案及解析