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4G is one of those terms that keep coming back through marketing brochures for what the la

test technologies happen to be in the cellphone market. Every carrier claims to have true 4G, and has been claiming that for years, regardless of what they actually use. The reason was simple because the real 4G specification, expected to be drafted by the International Telecommunication Union, was no where to be found. In fact, the ITU took way longer than being expected to come up with a decision, likely because of massive lobbying campaigns. After all, which company wants to have to redesign its entire network just to be able to keep saying they are 4G？ Now however, they ITU has decided itself.What does this mean for carriers and users？ First，let’s see what 4G really is. As expected, LTE is central to the ITU strategy,but more precisely,the organization went with LTE-Advanced,which is a stricter version of traditional LTE. To qualify as 4G，a network has to provide 100Mbps connections over wireless,and 1 Gbps over wired. The whole network has to be fully IPv6 compliant. Frequencies have to be variable over 40MHz to avoid interference. Finally, global roaming has to be seamless, along with transitions between wirless and wired connections. This is a real step forward, and a good decision, which ensures that real 4G services will meet a good level of services. Technically, LTE-Advanced is just one of two new standard that are now under the umbrella called IMT-Advanced. The other one is WiMAX 2 which is a further refinement of the WimMAX protocol. Based on the paragraph above，to qualify as 4G, a network has to satisfy （） criteria. The transitions between wireless and wired connections have to be （）. LTE-Advanced is a standard belonging to （）.

A．two B．three C．four D．five A．limited B．possible C．seamless D．deployed A．WiMAX B．WiMAX 2 C．IPv6 D．IMT-Advanced

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更多“4G is one of those terms that …”相关的问题

第1题

Many a young person tells me he wants to be a writer. I always encourage such people,

1+Many a young person tells me he wants to be a writer. I always encourage such people, but I also explain that there’s a big difference between a writer and writing. In most cases these individuals are dreaming of wealth and fame, not the long hours at a typewriter. “You have got to want to write,” I said to them, “not want to be a writer.”

The reality is that writing is a lonely, private and poor-paying affair. For every writer kissed by fortune there are thousands more whose longing is never rewarded. When I left a 20-year career in the U.S. Coast Guard to become a freelance writer, I had no prospects at all. What I did have was a friend who found for me my room in a New York apartment building. It didn’t even matter that it was cold and had no bathroom. I immediately bought a used typewriter and felt like a genuine writer.

After a year or so, however, I still hadn’t got a break and began to doubt myself. It was so hard to sell a story that barely made enough to eat. But I knew I wanted to write. I had dreamed about it for many years. I wasn’t going to be one of those people who died wondering. What if？ I would keep putting my dream to test (even though it meant living with uncertainty and fear of failure). This is the shadow-land of hope, and anyone with a dream must learn to live there.

21、The passage is meant to _______ .

A.warn young people of the hardship that a successful writer has to experience

B.advise young people to give up their idea of becoming a professional writer

C.show young people it is unrealistic for a writer to pursue wealth

D.encourage young people to pursue a writing career

24、In “…people who died wondering”, “who” refers to those _______ .

A.who think too much of the dark side of life

B.who regret giving up their career halfway

C.who think a lot without making a decision

D.who are full of imagination even upon death

25、“Shadow-land” in the last sentence refers to _______ .

A.the wonderland one often dreams about

B.the bright future that one is looking forward to

C.the state of uncertainty before one’s final goal is reached

D.a world that exists only in one’s imagination

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第2题

Meet Famous People in London Many people like to see famous people. But famous people d

on ’t（31）like to be looked at. At least, they don ’t like to be looked at all dayevery day! However, there is one （32 ）in England where you can look atlots of famous people every day. That is Madame Tussaud&39;s, the mostpopular （33 ）attraction in London. On most days of the year, （34 ）of visitors can be seen outsideMadame Tussaud ’s.

They want to （35） in and see some of the mostfamous people in the world. If you like, you can （36） to those film stars,sports stars or politicians in Madame Tussaud ’s, but they won ’t（37） anything to you, because they can ’t! Madame Tussaud ’s is awaxworks (蜡像馆)，and the “famous people ，，in the building are madeout of wax. But, this doesn&39;t （38） to be a problem. Ordinary people likelooking at （39 ）people, even if they are only （40 ）.

It’s better thannothing!

A. seem B. give C. place D. talk

E.statues F.tourist G.extraordinary H. lines

I.get J.rarely L.usually K. say

31_______

32

36

39

35

33

38

34

37

40

请帮忙给出每个问题的正确答案和分析，谢谢！

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第3题

阅读下面的句子，根据文章内容进行判断，正确写“T”，错误写“F”。 Domestic abuse happens when one person in a close relationship or marriage tries to control another. Domestic abuse that includes physical violence is called domesti

阅读下面的句子，根据文章内容进行判断，正确写“T”，错误写“F”。

Domestic abuse happens when one person in a close relationship or marriage tries to control another. Domestic abuse that includes physical violence is called domestic violence.

Domestic violence and abuse are used for one purpose only: to gain and maintain total control over you. An abuser doesn't “play fair.” Abusers use fear, guilt, shame to wear you down and keep you under his or her thumb. Your abuser may also threaten you, hurt you or hurt those around you.

Domestic abuse may happen among different groups of people. It occurs within all ages, genders, and economic levels. While women often suffer from it, men sometimes are victims too. People may get verbal and emotional abuse, even physical ones. The abusive behavior. is never acceptable, whether it's coming from a man, a woman, a teenager, or an older adult. You deserve to feel valued, respected, and safe.

()26. In a close relationship or a marriage, if one person tries to control another, domestic abuse may happen.

()27. If the abusive behavior. comes from a teenager, sometimes it is acceptable.

()28. Domestic abuse usually includes physical violence, verbal violence and emotional abuse.

()29. Besides the purpose of gaining and maintaining total control over someone, domestic abuse may be used for some other purposes.

()30. Domestic abuse may happen among the groups of the male and the rich.

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第4题

（填句补文）marine it's that time of year when you start thinking about taking a vacation

Marine it's that time of year when you start thinking about taking a vacation.Part of the work involves choosing an ideal location while the hard part can be making travel arrangements. （26） While those methods may be your first thoughts, train travel is a wonderful option that sometimes gets overlooked.

In recent years, train travel has increased greatly. A 2010 poll said 62 percent of Americans would probably choose to travel by train. The group responsible for most of the increase in train travel is senior citizens.（27）

The first advantage of traveling by train is not having to worry about driving or the stresses of flying. Today, taking a plane can be quite annoying.（28） In addition, some aren't fond of heights and instead enjoy feeling safe on the ground.

The second advantage of train travel is it allows passengers to enjoy beautiful scenes during the fide. （29） What's more, people can enjoy drinks, food, movies, and games on the train.

（30） It may bring back wonderful memories to those who rode trains with their families as children. Overall, train travel is both comfortable and relaxing. It is a wonderful way of traveling for senior citizens.

A. You don't have to keep your eyes on the road.

B. And they choose trains for a number of reasons.

C. Traveling by train can be t/ring and time-consuming.

D. Finally, railroad travel can be a timeless option for seniors.

E. How are you going to get there perhaps by plane, car, or bus？

F. One needs to check in bags and be subject to various security measures.

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第5题

A great difference between American social customs and those of other countries is the way

in which names are used. Americans have little concern for "rank", especially socially. (76) Most Americans do not want to be treated in any especially respectful way because of their age or social rank; it makes them feel uncomfortable. Many Americans even find the terms "Mr. ", "Mrs." or "Miss." too formal. People of all ages may prefer to be called by their first names. "Don't call me Mrs. Smith, just call me Sally." Using only first names usually indicates friendliness and acceptance. However, if you do not feel comfortable using only first names, it is quite acceptable to be more formal. Just smile and say that after a while you will use first names but you are accustomed to being more formal when you first meet someone.

Very often, introductions are made using both first and last names: "Mary Smith, this is John Jones." In this situation you are free to decide whether to call the lady "Mary" or "Miss Smith". Sometimes both of you will begin a conversation using last names, and after a while one or both of you may begin using first names instead. You have a choice: if you don't want to use first names so quickly, no one will think it impolite if you continue according to your own custom.

In the first paragraph the author tells us that ______.

A．Americans do not talk about rank, especially socially

B．Americans feel uncomfortable when talking about rank

C．Americans take interests in social customs

D．Americans don't care much about social rank

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第6题

Many people who work in London prefer to live outside it, and to go in to their office

s or schools every day by train, car or bus, even though this means they have to get up early in the morning and reach home late in the evening.

One advantage of living outside London is that houses are cheaper.Even a small flat in London without a garden costs quite a lot to rent.With the same money, one can get a little house in the country with a garden of one's own.

Then, in the country one can really get away from the noise and hurry of busy working lives.Even though one has to get up earlier and spend more time in trains or buses, one can sleep better at night and during weekends and on summer evenings, one can enjoy the fresh, clean air of the country.If one likes gardens, one can spend one's free time digging, planting, watering and doing the hundred and one other jobs which are needed in a garden.Then, when the flowers and vegetables come up, one has got the reward together with those who have shared the secret of Nature.

Some people, however, take no interest in country things: for them, happiness lies in the town, with its cinemas and theatres, beautiful shops and busy streets, dance-halls and restaurants.Such people would feel that their life was not worth living if they had to live it outside London.An occasional walk in one of the parks and a fortnight's two weeks) visit to the sea every summer is all the country they want: the rest they are quite prepared to leave to those who are glad to get away from London every night.

1、Which of the following statements is NOT true？_________

A.People who love Nature prefer to live outside the city

B.People who work in London prefer to live in the country

C.Some people enjoying city life prefer to work and live inside London

D.Many nature lovers, though working in London, prefer to live outside the city

2、With the same money ________, one can buy a little house with a garden in the country.

A.getting a small flat with a garden

B.having a small flat with a garden

C.renting a small flat without a garden

D.buying a small flat without a garden

3、When the garden is in blossom, it means that one ________ has been rewarded.

A.living in the country

B.having spent time working in the garden

C.having a garden of his own

D.having been digging, planting and watering

4、People who think happiness lies in the town would feel that _______ if they had to liveoutside London.

A.their life was meaningless

B.their life was invaluable

C.they didn't deserve a happy life

D.they were not worthy of their happy life

5、The underlined phrase get away from in the 3rd paragraph refers to ________.

A.deal with

B.do away with

C.escape from

D.prevent from

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第7题

I recently wrote an autobiography in which I recalled many old memories. One of them was f

rom my school days, when our ninth grade teacher, Miss Raber, would pick out words from Reader's Digest to test our vocabulary.

Today, more than 45 years later, I always check out " It pays to Enrich Your Word Power" first when the Digest comes each month. I am impressed with that idea, word power. Reader's Digest knows the power that words have to move people to entertain, inform. and inspire. The Digest editors know that the big word isn't always the best word. Take just one example, a Quotable Quote from the February 1985 issue: " Time is a playful thing. It slips quickly and drinks the day like a bowl of milk. "

Seventeen words, only two of them more than one syllable, yet how much they convey! That's usually how it is with Reader's Digest. The small and simple can be profound.

As chairman of a foundation to restore the Statue of Liberty, I've been making a lot of speeches lately. I try to keep them fairly short. I use small but vivid words: words like "hope" , "guts", "faith" and "dreams". Those are words that move people and say so much about the spirit of America.

Don't get me wrong. I'm not against using big words, when it is right to do so, but I have also learned that a small word can work a small miracle—if it's the right word, in the right place, at the right time. It's a "secret" that I hope I will never forget.

The passage is mainly about______.

A．one of the many old memories

B．using simple words to express profound ideas

C．Reader's Digest and school speeches

D．how to make effective speeches

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第8题

The days in summer are longer than________ in winter.

A.that

B.one

C.those

D.these

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第9题

The Case of the Disappearing Fingerprints One useful anti-cancer drug can effectively eras

The Case of the Disappearing Fingerprints

One useful anti-cancer drug can effectively erase the whorls(萝状指纹)and other characteristic marks that give people their distinctive fingerprints．Losing them could become troublesome．A case【51】______online in a letter by Annals of Oncology indicates how big a【52】______losing finger prints is．

Eng-Huat Tan，a Singapore-based medical doctor describes a 62-year-old man who has used capecitabine(卡培他滨)to【53】______his nasopharyngeal cancer(鼻咽症)．After three years on the【54】______，the patient decided to visit his U．S．relatives last December．But he was stopped by U．S． customs officials【55】______4 hours after entering the country when those officials couldn't get finger prints from the man．There were no【56】______swirly(旋涡状的)marks appearing from his index fin ger．

U．S．customs has been fingerprinting incoming foreign visitors for years，Tan says．Unfortunately， for the Singaporean traveler，one potential【57】______effect of his drug treatment is a smoothing of the tissue on the finger pads．【58】______，no fingerprints．

“It is uncertain when fingerprint【59】______will begin to take place in patients who are taking capecitabine，”Tan points out．So he【60】______any physicians who prescribe the drug to provide their patients with a doctor's【61】______pointing Out that their medicine may cause fingerprints to disappear．

Eventually，the Singaporean traveler made it into the United States．But he's also now got the explanatory doctor's note-and won't leave home【62】______it．

By the way，maybe the Food and Drug Administration，【63】______approved use of the drug 11 years ago，should consider updating its list of side effects【64】______with this medicine．The current list does note that patients may experience vomiting(呕吐)，stomach pain and some other side effects． But no where【65】______it mention the potential for loss of fingerprints．

(51)

A．released

B．suggested

C．accepted

D．detected

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第10题

The furniture in her room is quite different from （)in the exhibition hail.

A.that

B.one that

C.ones

D.those ones

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