3 . To help you understand what 5G is, and what it means to you, we’ve put together a handy guide here.

What is 5G?

    1    At its most basic level, 5G will be used to make calls, send texts, and to simply get online. But it’s going to be significantly faster than previous generations, and could open the door up to a range of exciting new uses.

    2    

5G will use new higher radio frequencies to send out data, which are less cluttered(挤了)and carry information much faster. While these higher bands(频段) are faster, they don’t carry information as far. That’s to say, smaller multiple input and output antennas (天线)will be used—promoting both signals and capacity(容量).    3    

Why is it better than 4G?

5G is expected to be faster than 4G, with some firms claiming it could be as much as 100 times quicker. The fastest 4G networks can deliver 传输)peak(峰值)download speeds of around 300 Mbit/s.    4    In real life, this could allow you to download a full HD film in less than 10 seconds!    5     It means there will be very little—if any—delay when you carry out tasks on a device(设备). While this will help improve things like gaming experiences, it could also pave(为…铺平道路)the way for safer self-driving cars—in which even a short delay could be life-saving.

Finally, 5G will have a larger capacity, meaning networks will be able to deal with several apps at once. Generally, this should mean that devices have a faster, more stable connection.

A．How does 5G work?

B．How will 5G affect you?

C．5G is also expected to have a lower lag(延迟).

D．5G is short for “5th generation mobile network.”

E．In comparison, 5G could offer download speeds of over 1 Gb/s.

F．Therefore, the similarity between 5G and 4G technology is huge.

G．This means 5G will support up to 1,000 more devices per meter than 4G.

5 . In the summer of 2016, I gave a talk at a small conference in northern Virginia. I began by admitting that I’d never had a social-media account; I then outlined arguments for why other people should consider removing social media from their lives. The event organizers uploaded the video of my talk to YouTube. Then it was shared repeatedly on Facebook and Instagram and, eventually, viewed more than five million times. I was both pleased and annoyed by the fact that my anti-social-media talk had found such a large audience on social media.

I think of this event as typical of the love-hate relationships many of us have with Facebook, Instagram, and other social-media platforms. On the one hand, we’ve grown cautious about the so-called attention economy, which, in the name of corporate(公司的)profits, destroys social life gradually and offends privacy. But we also benefit from social media and hesitate to break away from it completely. Not long ago, I met a partner at a large law firm in Washington, D.C., who told me that she keeps Instagram on her phone because she misses her kids when she travels; looking through pictures of them makes her feel better.

In recent months, some of the biggest social-media companies, Facebook and Twitter, in particular, have promised various reforms. In March, Mark Zuckerberg announced a plan to move his platform toward private communication protected by end-to-end encryption(端对端加密); later that month, he put forward the establishment of a third-party group to set standards for acceptable content.

All of these approaches assume that the reformation of social media will be a complex, lengthy, and gradual process. But not everyone sees it that way. Alongside these official responses, a loose collective of developers that calls itself the Indie Web has been creating another alternative. They are developing their own social-media platforms, which they say will preserve what’s good about social media while getting rid of what’s bad. They hope to rebuild social media according to principles that are less corporate and more humane(人道的).

1. Why did the author feel annoyed when his video was spread online?

A．His video caused many arguments.

B．His video’s popularity on social media is against his talk.

C．His talk was opposed by a large amount of people.

D．His video was shared without his permission.

2. Why does the author mention the story of his partner in paragraph 2?

A．To prove that social media has some benefits.

B．To advise people to break away from social media.

C．To tell the negative effects social media may produce.

D．To describe people’s complicated relationships with social media.

3. What is the purpose of the reform made by some social-media companies?

A．To improve network environment.	B．To set network standards.
C．To make more profits.	D．To provide more convenient service.

4. What does the Indie Web intend to do?

A．Improve the existing social-media principles.

B．Remove social media from people’s lives.

C．Develop new social-media platforms.

D．Help social-media companies to make reformation.

5. What does the underlined word “outlined”(in paragraph 1)mean?

A．expected

B．criticized

C．summarized

D．rejected

6 . It will come as no comfort to a child shivering (打哆嗦) on a playing field on a cold winter’s day. But regular organized school sport helps children in their academic studies in years to come. The researchers said other “structured” activities such as music or religious activities were not as beneficial for attention as taking part in a games lesson. The difference in academic ability was noticeable even at age ten, with those who had taken in sports since the start of junior school performing better than those who hadn’t.

The Canadian study looked at children aged six and then ten. Professor Linda Pagani said:“We worked with information provided by parents and teachers to compare kindergarteners’ activities with their classroom activities as they grew up. By the time they reached the fourth grade, kids who played structured sports were clearly better at following instructions and remaining focused in the classroom. There is something special to the sporting environment — perhaps the sense of belonging to a team to a special group with a common goal — that appears to help kids understand the importance of respecting the rules and honoring responsibilities.”

Researchers began studying 2,694 Canadian children around the age of six, with teachers filled in questionnaires about their behavior in school. Meanwhile, the children’s parents were interviewed by phone or in person about their home life. The exercise was the repeated four years later to test what effect the behavior had.

Professor Pagani said: “We found children who had better behavior in the kindergarten class were more likely to be involved in sport by age ten. Nevertheless, we found those children who were specifically involved in team sports at kindergarten scored higher by the time they reached the fourth grade.” The researchers believe sporting activities and attention skills go hand in hand. Professor Pagani added: “The results should be encouraging for schools looking to cut childhood obesity rates and low attainment in schools.”

1. What kinds of children may do better in their academic study according to paragraph one?

A．Those who join in structured activities.

B．Those who don’t shiver on a cold winter’s day.

C．Those who don’t like school sports.

D．Those who take part in game lessons.

2. What did the researcher focus on in their research?

A．The classroom activities.	B．The results of the exams.
C．The performance at kindergarten.	D．The time spent in classrooms.

3. In the sporting environment, kids are more likely to ______.

A．understand each other better	B．follow the rules
C．respect the teachers	D．give up

4. What does the third paragraph mainly tell us?

A．How scientists carried out the research.

B．Why parents were interviewed by phone.

C．How kids behaved at home or at school.

D．How many sports kids did at school.

5. What can we infer from Prof. Pagani’s words in the last paragraph?

A．The research will be of great benefit.

B．It’s necessary for children go to kindergartens.

C．Childhood obesity rates can lead to low attainment.

D．Team sports will be reduced at kindergartens.

7 . Almost 80% of the Americans have stated their opposition to cloning pet animals such as cats and dogs, yet companies still try to make a business out of selling cloned pets. Pet cloning has been promoted as a way to “bring back” or “copy” a beloved companion animal. However, studies have shown that cloning remains an experimental technology with many failures.
Behind each lovely picture of a cloned cat or dog lie hundreds of animals that were kept in lab cages, receiving bad treatment to produce just that one cloned animal. For all that, you end up with a cloned animal who is unlikely to appear like the original physically or behaviorally and may experience serious health problems. Also, while pet cloning companies are charging customers up to $150,000 for a cloned pet, millions of homeless animals of the same species are available in US animal shelters for around $100. Unfortunately, most of these animals are killed for lack of adopting homes.
With No Pet Cloning campaign, the American Anti-Vivisection Society (AAVS) tries to protect both animals and people from harm. They campaigned until the US companies that sold cloned animals closed their doors. First it was Genetic Savings & Clone Inc. and then it was BioArts International.
When BioArts was closed, its owner, Lou Hawthorne, finally had to acknowledge the problems of pet cloning. According to Hawthorne, he has seen numerous failures during his pet cloning attempts, “One clone—which was supposed to be black and white—was born greenish-yellow where it should have been white (we still have no good explanation for how that happened).”
The AAVS is educating the public about the animal suffering and is seeking regulation of cloning activities. They will continue to take the lead in protecting animals from the threats of pet cloning.
1. From the passage, we know that ____.

A．pets are often deserted by their owners

B．more and more people have joined the AAVS

C．most American are against cloning pet animals

D．the American Anti-Vivisection Society is supported by the government

2. According to the passage, companies keep on selling cloned pets to ____.

A．carry on scientific studies

B．get economic interests

C．protect pet animals

D．comfort animal lovers

3. What does the author try to do by writing the second paragraph?

A．To tell the truth behind pet cloning.

B．To show the method of pet cloning.

C．To compare pet animals with homeless ones.

D．To save the animals kept in labs and shelters.

4. The underlined word “acknowledge” probably means "____".

A．accept

B．study

C．admit

D．manage

5. According to the passage, the AAVS devotes itself to ____.

A．getting most countries to fight against pet cloning

B．improving the technology of pet cloning

C．saving lots of animals from bad situations

D．stopping US companies’ selling cloned animals

8 . I stood outside New York’s Madison Square Garden and just stared, almost speechless. I was a farm boy from County Kilkenny, a child who some thought would never walk, let alone go as far as I had in the world.

From the day I was born, there was a problem. The doctors at the Dublin hospital told my parents I had phocomelia, a deformity that affected both legs below the knee, which were outward and shorter than normal and each foot had just three toes.

Life was tough. I couldn’t stand, much less walk. I rarely, left the farmhouse---and then only in someone’s arms. Mam bundled me up whenever she took me to town, no matter the season.

“The world will see him when he can walk,” she told Dad. “And he will walk.”

Mam devoted herself to helping me. She tried everything to get me on my feet. When I was three, she and Dad took me to a clinic in Dublin.

A few weeks later we returned to Dublin with my artificial limbs (肢). Back home I practiced walking with my new limbs.

“There’s nothing anyone can do but you can’t,” Mam said. “You and I are going to walk through town.”

The next day Mam dressed me in my finest clothes. She wore a summer dress and fixed her hair and makeup. Dad drove us to the church. We stepped out of the car. Mam took my hand. “Hold your head up high, now, Ronan,” she said.

We walked 300 meters to the post office. It was the farthest I’d walked, and I was sweating from the effort. Then we left the post office and continued down the street, Mam’s eyes shining with a mother’s pride.

That night, back on our farm, I lay exhausted on my bed. It meant nothing, though, compared to what I’d done on my walk.

Then I began to pursue my dream of singing. And at every step Mam’s words came back to me—Ronan, you can do anything anyone else can do—and the faith she had in God, who would help me do it.

I’ve sung from the grandest stages in Europe, to music played by the world’s finest musicians. That night, I stood at the Madison Square Garden, with Mam’s words chiming in my ears. Then I began singing. I couldn’t feel the pulse of the music in my feet, but I felt it deep in my heart, the same place where Mam’s promise lived.

1. What was the problem with the author as a baby?

A．He was expected unable to walk.

B．He was born outward in character.

C．He had a problem with listening.

D．He was shorter than a normal baby.

2. The underlined word “deformity” in the second paragraph most probably means _______.

A．shortcoming

B．disadvantage

C．disability

D．delay

3. Why did Mam dress him and herself in finest clothes?

A．To hide their depressed feeling.

B．To indicate it an unusual day.

C．To show off their clothes.

D．To celebrate his successful operation.

4. From the story we may conclude that his mother was _______.

A．determined

B．stubborn

C．generous

D．distinguished

5. According to the writer, what mattered most in his success?

A．His consistent effort.	B．His talent for music.
C．His countless failures.	D．His mother’s promise.