You might have noticed that sometimes, when you’re playing mobile games or making a video call, the picture suddenly freezes(卡頓)because the network speed is too slow. When you try to download a movie on your phone, it seems to take forever.

These annoying things will soon become things of the past, as China just issued commercial licenses(發(fā)放商業(yè)牌照)for 5G networks on June 6. This means that China’s telecommunications(電信) companies will be able to offer 5G network speeds for mobile phone users.

The “G” stands for generation (代) . 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and Internet, and 4G made all of these things faster. So what will 5G bring？

First of all, 5G is so fast that it will allow us to download an entire HD movie in a second. The delay(延時) between sending and receiving data will be shortened. Now, 4G takes about 100 to 200 milliseconds(毫秒)，while humans have a reaction time of about 200 to 300 milliseconds. But 5G will get the delay down to 1 millisecond or less, which is almost real-time.

Because of this increase in speed, it will be possible to create and use new kinds of technology. Robots will be used to do operations because doctors will be able to control them from somewhere else without any delay. Self-driving cars will be able to drive more safely because they can smoothly communicate with other cars, traffic lights and road Sensors (傳感器). 5G also makes the Internet of Things(IOT物聯(lián)網(wǎng))possible.

All in all, 5G will shape every type of technology that it touches. And you won’t have to wait too long for that to happen.

1.From the first paragraph we can know that________.

A.people can’t download movie at all on the phone

B.making a video call is impossible for phone users

C.sometimes the network speed is too slow to use

D.mobile games can’t be downloaded on the phone

2.What happened on June according to the passage？

A.China just gave commercial licenses officially for 5G networks.

B.Every mobile phone user could improve the network speed

C.Most mobile phone users didn’t use 4G anymore.

D.All the mobile phones are much cheaper than before.

3.Which of the following is NOT true according to the passage?

A.5G will make people’s life much easier and more convenient.

B.Self-driving cars will become safer because of the use of 5G.

C.Using 5G to download something doesn’t take any time at all.

D.5G can make people download an entire HD movie in a second.

4.We can find the passage________.

A.from an ad B.in a newspaper C.in a storybook D.in science fiction

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：北京市2019-2020學(xué)年七年級下學(xué)期月考英語試卷 題型：單選題

I sometimes help my mother with the housework________Saturday afternoon.

A.at B.on C.in

查看答案和解析>>

科目：初中英語 來源：2020年黑龍江省哈爾濱市升學(xué)調(diào)研測試英語試卷（一） 題型：完型填空

Is there anything that could help parents understand their kids better? More than 8,000 kids answered this question in an online survey by Time for Kids and Kids Health. Org.

Many kids — two out of three — said they _______ their parents. But that doesn’t mean they _______ disagree. In fact, most kids reported _______ with their parents on occasion(偶爾). Some even reported that their arguments included shouting at each other.

“It’s certainly _______ to disagree and argue,” says D’Arcy Lyness, a child psychologist(心理學(xué)家). “But it’s also important to learn how to do so politely.”

It is not _______ that three out of four kids said they had lied(撒謊) to their parents sometimes. Many said they lied _______ they wouldn’t get in trouble or disappoint their parents. According to Lyness, lying can have bad _______. If kids lie when they’re young, they might continue a pattern of lying even as adults.

Telling the truth, on the other hand, shows maturity(成熟). But older kids actually lie more _______ than younger ones. Kids aged 12 to 14 not only said they lied more, but they also reported having less fun, feeling less close and not getting along as well with their _______.

According to Lyness, these feelings are common. As kids become more ________, they have more areas of disagreement with their parents. But it doesn’t have to be that way. “Kids and parents get along differently at each part of the journey,” she says. “As kids grow and change, it is important for everybody to change.”

1.A.got along with B.kept away from C.looked after

2.A.always B.often C.never

3.A.arguing B.talking C.competing

4.A.unusual B.normal C.different

5.A.surprise B.surprised C.surprising

6.A.such as B.so that C.even if

7.A.results B.answers C.notices

8.A.quickly B.carefully C.often

9.A.friends B.parents C.classmates

10.A.outgoing B.beautiful C.independent

查看答案和解析>>

科目：初中英語 來源：2020年黑龍江省哈爾濱市升學(xué)調(diào)研測試英語試卷（一） 題型：單選題

Which of the following words doesn’t have the same stress as the others?

A.Interest. B.Machine. C.Prefer.

查看答案和解析>>

科目：初中英語 來源：2020年寧夏中衛(wèi)市中寧縣九年級第一次模擬考試英語試卷 題型：根據(jù)句意填空

The boy tells the woman that he’ll be_________ if he rides a bike to school.

查看答案和解析>>

科目：初中英語 來源：2020年寧夏中衛(wèi)市中寧縣九年級第一次模擬考試英語試卷 題型：完型填空

What does “self-control” mean? Suppose you have a ticket for an exciting film which you want to see very much, but unluckily you have to study____an exam tomorrow. What will you do? See the film____study for the exam? If you can give up seeing the film and work hard at your____, it means that you have self-control. Self-control is not something that you have at birth. It needs to be cultivated in your life.

Often, young children are easily____when their needs or wishes are not met at once. Almost daily, children see a lot of food, toys and activities that are attractive to them. Many time children do not know how to____their frustration（挫折） when they are told “no” or “l(fā)ater”. Also, sometimes young children do not understand____they are not allowed to do anything. In order to have positive experiences at home and at school, children need to learn____to properly deal with their feelings when they cannot have something. These skills will increase children’s self- control.

Don’t go to bed late because of a nice TV program, or you may go to school____and it is a waste of time. Every one of us has some hobbies, a few of which may____us from making progress in life. We must use our____to become free of them.

1.A.for B.at C.on D.about

2.A.and B.while C.but D.or

3.A.school B.lessons C.films D.listening

4.A.happy B.upset C.tired D.excited

5.A.begin with B.play with C.deal with D.do with

6.A.what B.which C.why D.who

7.A.skills B.lessons C.ways D.strategies

8.A.early B.late C.on time D.slowly

9.A.leave B.make C.keep D.push

10.A.decision B.energy C.knowledge D.self-control

查看答案和解析>>

科目：初中英語 來源：湖北省武漢市部分學(xué)校2019-2020學(xué)年九年級下學(xué)期期中模擬英語試卷 題型：單選題

—Excuse me, can you tell me ________?

—Of course.

A.where is the nearest bank B.which is the way to the nearest bank

C.how can I get to the nearest bank D.there is a bank near here

查看答案和解析>>

科目：初中英語 來源：2020年河南省駐馬店市內(nèi)部模擬英語試卷 題型：完型填空

先通讀短文，掌握其大意，然后從A、B、C、D四個選項中選出一個可以填入相應(yīng)空白處的最佳答案。

When faced with difficult situations in their lives, many people find them too challenging and_______, especially on their life dreams. But not for Gabriel Heredia.

Gabriel is a 20-year-old Argentinian barber（阿根廷理發(fā)師）who was born_______hands. But he was able to grow up happily and independent because he always had the_______of friends and family. In fact, his_______for such work was his mother, who is a hairdresser. At the age of 14, he began to take interest in_______work and learned all kinds of hair cutting skills from her._______he first saw it as an interest, Gabriel quickly decided that this was his dream job.

Gabriel’s family soon helped him open his first barbershop in San Isidro, Peru, which he_______at for one and a half years. There, he met Zlatan Gomez, the president of Argentina Corta, an organization for barbers to connect, do charity work, and teach hairdressing. Later, Gabriel became part of Argentina Corta,_______his services to people of all ages so they can build up the skills they need to get a job.

Gabriel then_______to Buenos Aires, Argentina where he cuts hair today. As a bright and________young man, Gabriel tries hard to not only be a barber, but also make a connection with the neighborhood. He says, “The thing that I like most about my job is that people feel ________and stylish with my cuts and that makes me feel happy”.

Gabriel always does his best to be________. He________gives up. There is________he can’t do.________cutting hair, he has learned to ride a bike, a motorbike and even to drive a car. He is no doubt inspiring others.

1.A.give away B.give up C.give out D.give in

2.A.with B.in C.on D.without

3.A.presents B.money C.support D.courage

4.A.instruction B.introduction C.inspiration D.information

5.A.his B.their C.its D.her

6.A.Until B.Unless C.Although D.And

7.A.studied B.worked C.stayed D.arrived

8.A.providing B.offering C.affording D.choosing

9.A.moved B.returned C.visited D.arrived

10.A.serious B.strict C.happy D.caring

11.A.clean B.comfortable C.unforgettable D.necessary

12.A.happy B.connection C.special D.independent

13.A.seldom B.less C.never D.often

14.A.nothing B.something C.everything D.anything

15.A.Including B.Besides C.Except D.By

查看答案和解析>>

科目：初中英語 來源：黑龍江省齊齊哈爾市甘南縣（五四學(xué)制）2019-2020學(xué)年六年級下學(xué)期期中英語試卷 題型：單選題

How did you________English last week?

A.learn B.learned C.learning

查看答案和解析>>

同步練習(xí)冊答案