【題目】 There has been a lot of publicity recently surrounding 5G, the next generation of wireless technology for the world. But what is this technology and how might it change our lives?

5G stands for fifth generation, meaning the next step in the progression of technology to replace the current 4G system. 4G was the replacement for 3G, which came after 2G, and so on. Earlier "G" systems were designed to improve mobile communication operations. Each new technology brought major improvements in speed and greatly increased network capacity（容量）. The new 5G system promises more of the same. However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other "G" versions.

Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（傳感器） networks. 5G is also expected to connect self-driving cars and support new technologies involving virtual reality. Higher 5G speeds could also permit doctors to commonly perform remote medical operations. Factories and businesses could use 5G technology to increase automation and improve the collection of information.

Every coin has two sides. Much of the data could contain private details about individuals, businesses or government organizations. The increased data flow would give internet attackers a lot more possibilities to steal and misuse data. In addition, the wider use of a 5G wireless network means any breakdown of the system would have more widespread and severe results. Such difficulties could affect public safety as well as world economic activity.

【1】What is the significant difference between 5G and the early “G” systems?

A.It will affect more devices and industries.

B.It will change the way people communicate.

C.It will reform the pattern of information system.

D.It will improve internet speed and network capacity.

【2】What can we learn about "smart cities" from the passage?

A.Smart city is a city full of intelligent people.

B.Now many smart cities have been built all over the world.

C.As long as there is a wireless network, you can build a smart city.

D.The development of 5G accelerates the construction of smart cities.

【3】Why can 5G allow doctors to perform long-range medical operations?

A.Because of the low cost of 5G.

B.Because of the wide range of 5G.

C.Because of the high speed of 5G.

D.Because of the ability of 5G to collect information.

【4】What is the last paragraph mainly about?

A.Possible risks of 5G technology.

B.The advantages of 5G technology.

C.The influence of 5G technology on the world.

D.The importance of information security in the 5G era.

【答案】

【1】A

【2】D

【3】C

【4】A

【解析】

本文是一篇說明文。主要介紹了5G以及其優(yōu)缺點(diǎn)。

【1】細(xì)節(jié)理解題。根據(jù)文章第二段的However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other "G" versions.可知然而，技術(shù)專家說，有一個(gè)主要的方法，5g不同于早期系統(tǒng)。 比其他“g”版本，它將遠(yuǎn)遠(yuǎn)超越移動(dòng)網(wǎng)絡(luò)技術(shù)，影響更多的設(shè)備和行業(yè)。故答案選A。

【2】推理判斷題。根據(jù)文章倒數(shù)第二段的Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（傳感器） networks.(無(wú)線產(chǎn)業(yè)集團(tuán)表示，5G將通過連接傳感器網(wǎng)絡(luò)幫助增強(qiáng)未來(lái)的“智能城市”。)可推斷5G技術(shù)的發(fā)展加速了智能城市的建設(shè)，故答案選D。

【3】細(xì)節(jié)理解題。根據(jù)文章倒數(shù)第二段的Higher 5G speeds could also permit doctors to commonly perform remote medical operations.可知較高的5g速度也可以允許醫(yī)生進(jìn)行一般遠(yuǎn)程醫(yī)療操作。故答案選C。

【4】主旨大意題。段首的Every coin has two sides意為任何事物都有兩面性，聯(lián)系上一段講的是5G的優(yōu)勢(shì)，故本段講述的應(yīng)為5G可能存在的風(fēng)險(xiǎn)。故答案選A。

推理判斷題是對(duì)暗含在文章中的人物的行為動(dòng)機(jī)、事件的因果關(guān)系及作者未言明的傾向、意圖、態(tài)度、觀點(diǎn)等要進(jìn)行合乎邏輯的判斷、推理、分析，進(jìn)一步增強(qiáng)理解能力，抓住材料實(shí)質(zhì)性的東西。例如本題第2小題，根據(jù)文章倒數(shù)第二段的Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（傳感器） networks.(無(wú)線產(chǎn)業(yè)集團(tuán)表示，5G將通過連接傳感器網(wǎng)絡(luò)幫助增強(qiáng)未來(lái)的“智能城市”。)可推斷5G技術(shù)的發(fā)展加速了智能城市的建設(shè)，故答案選D。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】假定你是李華，對(duì)源自愛爾蘭的St. Patrick's Day很感興趣，想了解并向同學(xué)們介紹這個(gè)節(jié)日。請(qǐng)你給愛爾蘭的朋友Peter寫一封信，詢問關(guān)于St. Patrick's Day的一些信息。

內(nèi)容包括：

1. 寫信原因；

2. 需要的幫助；

3. 你的感激之情。

注意:1. 詞數(shù)80左右

2. 可適當(dāng)增加細(xì)節(jié)，以使行文連貫。

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容(1個(gè)單詞)或括號(hào)內(nèi)單詞的正確形式。

Thousands of workers are busy preparing pavilious（展覽館）and gardens for the International Horticultural Exibition(世園會(huì))2019 in Beijing , as fewer than 30 days remain until the opening.

The expo park(展會(huì)園區(qū))【1】 （locate）at the foot of the Great Wall in Beijing’s northwestern Yanqing district. More than 110 countries and international organizations have confirmed their 【2】(participate) in the event, as well as more than 120 unofficial exhibitors. Exhibition curators(管理人)said 41 outdoor parks will open to 【3】public, including 34 independent 【4】 (one), and seven joint gardens.

So far, China’s 31 provincial-level regions, plus Hong Kong, Macao and Taiwan, have been divided into eight exhibition areas based【5】 their locations.

Environmental protection is the key element that provincial exhibits will stress. Channels have been built around the park 【6】(collect) rainwater. Some special stones from around the country will also stand on a grand square 【7】 connects different gardens. The stone from Jiangxi province is blue and white, 【8】 (represent) the famous blue and white porcelain（瓷器） of the province’s Jingde town.

This is the second time China【9】 (host) a high-level horticulture expo. Kunming , Yunnan province , hosted the expo in 1999. Visitors can enjoy more than 2,500 【10】 (culture) activities throughout the expo.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】 I was born and raised in England in a culture where privacy and “keeping yourself to yourself” were valued traditions. Speaking to strangers was not encouraged. People were most hospitable(好客的) and friendly—but only once they had been introduced to new people.

However, I have been lucky enough to spend some time in both Italy and the US, where I found traditions of hospitality and politeness to be very different.

I experienced Italian hospitality first－hand on a crowded railway carriage travelling, one afternoon, from Genoa to Florence. Sinking gratefully into an empty seat, I was berated(斥責(zé)) in rapid Italian by a gentleman who was returning to this seat－it had not been “spare” after all. I apologized in English, and got up to allow him back into the seat. The gentleman obviously had no understanding of the English language, but he, too, realized my genuine mistake. He smiled and gestured for me to remain in the seat, and he himself remained standing in the corridor for the remainder of the journey. The other occupants of the carriage smiled and nodded at me and made me feel quite welcome amongst them. I feel that if this had been in England, a foreigner who made a mistake would not always be so kindly treated.

Transport also featured in the differences I noticed between English and American culture. I flew to New York on a plane with mainly English passengers. We sat together in near silence. Nobody spoke to me nor, as I expected, to anyone else they did not know. They felt it was not polite to intrude on someone else's privacy. However, when I travelled across the United States, whether by plane or Greyhound bus, I was never short of conversation. Conversation was going on all around me and whoever sat next to me was happy to introduce themselves and ask me about myself. They obviously felt it would have been rude not to speak to another person, whether they were strangers or not.

【1】What do we know about the occupants of the carriage when the author was travelling in Italy?

A.They all laughed at the author for his mistake.

B.They would not bear a mistake like the author's in public.

C.They were all on the side of the gentleman.

D.They all showed their understanding of the author's mistake.

【2】The author probably believes the Italian people are________.

A.coldB.rude

C.hospitableD.helpful

【3】According to the last paragraph, English passengers sat in near silence because________.

A.they were all strangers to each other

B.they were too tired to speak

C.privacy was a valued tradition in England

D.everybody had their own share of privacy

【4】The purpose of the author is to tell us ________.

A.his travelling experience

B.cultural differences to show hospitality and politeness

C.the culture shock he experienced in Italy and the US

D.how to adapt ourselves to a new culture

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】 Chris Mazdzer won a silver medal in a men’s luge (無(wú)舵雪橇) singles event at 2018 Pyeongchang Winter Olympics, South Korea — equaling the best finish ever for any member of the US Olympic luge team. In the luge, competitors lie flat, feet first, on a small sled (雪橇). They can travel around an icy track at speeds up to 140 kilometers an hour. The riders control the sled’s speed by changing the position of their feet or by moving their shoulders.

So why did the US luge team win a medal at the Pyeongchang Olympics? Most credit must go to Chris Mazdzer himself. The American said his win was a product of 16 years of preparation and intense training. But another reason for Mazdzer’s success could have been the 3-D printing technology, which his team used to make its equipment.

The term 3-D is short for three dimensional, meaning an object with length, width and height. In 3-D printing, 3-D models are first created as files, or documents, on a computer. The printer then uses a substance (物質(zhì)) like plastic or metal to create physical objects. The process involves making one layer of material at a time until the objects reach full form.

The US luge team worked with an American company called Stratasys on the designing and manufacturing process for the sleds. First, the company made a scan, or image, of the body of every member of the luge team. Then, 3-D printing technology was used to create tools for making molds (模子) in the shape of Olympians on top of a sled. The process of designing and tooling sled parts is highly complex and can take several weeks. Officials from the US luge team say 3-D printing can greatly simplify the process, speeding up the production of parts.

Jon Owen, says the use of 3-D printing has made the team more competitive. It helps the team “continuously adjust designs and run the sleds on the track much faster than traditional processes,” he said. He added that the technology also provides a way to perfectly fit each rider to the sled, while cutting production time and costs.

【1】According to the author, what mainly contributed to Mazdzer’s winning the medal?

A.His own great efforts.B.His using a new technique.

C.The cooperation with his luge team.D.The US Olympic luge team’s encouragement.

【2】To make the sleds for the team, what did the company have to do?

A.To create tools for making sled parts.

B.To take some photos of the members first.

C.To create molds according to the members’ bodies.

D.To ask the Olympians to be present for several weeks.

【3】From the last paragraph we learn that 3-D printing most probably __________.

A.saves plenty of competitors’ training time

B.helps competitors achieve their full potential

C.requires great skills of riders to fit the track

D.allows riders to change their sleds continuously

【4】What is the text mainly about?

A.How 3-D printing usually works.

B.How we take advantage of 3-D printing.

C.How the US luge team performed this year.

D.How 3-D printing helped Team US go for gold.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】假定英語(yǔ)課上老師要求同桌之間交換修改作文，請(qǐng)你修改你同桌寫的以下作文。文中共有10處語(yǔ)言錯(cuò)誤，每句中最多有兩處。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。

增加：在缺詞處加一個(gè)漏字符號(hào)（∧），并在其下面寫出該加的詞。

刪除：把多余的詞用斜線（\）劃掉。

修改：在錯(cuò)的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1. 每處錯(cuò)誤及其修改均僅限一詞。

2. 只允許修改10處，多者（從第 11 處起）不計(jì)分。

In my childhood, my parents sent me to learn Chinese handwriting, believe that it could benefit me great. However, things are quite opposite to their expectations. Not only did get bored with hours of practice and I doubted the value of it. But my later experience proved that practicing handwriting was both essential and benefit. When I entered into high school, handwriting became a fantastic way for me to relax. It was at that time that I realized what important it was to master a certain skill. Don’t refuse to learn the skill because you will find it helpful late.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】Dear Sir,

I have to travel every day from Souk Road to the airport. Two buses travel along their route: the number 49 and number 16. But by the time the number 16 bus reaches Souk Road it is always full, so I can’t get on it. I have to wait for the number 49, because sometimes there are empty seats on it.

The timetable says that there are buses from Souk Road to the airport every ten minutes. If this is so, why do I have to wait half an hour for a bus nearly every day?

The regulations (規(guī)章) say that if there are empty seats on a bus, the bus must stop at every stop where people are waiting. Why do the half-empty buses go straight past me when I am standing at the bus stop?

The regulations say that no bus may carry more than 40 seated passengers and 20 standing passengers. Yesterday I was the first to get off the bus when it reached the airport. I counted the other passengers as they got off. There were 129 of them.

It is clear that our bus companies break the regulations and think little of their passengers. Can nothing be done to make your service better?

Yours,

Tired passenger

【1】The writer has to take Bus No. 49 because ______.

A.it is not always fullB.it arrives on time

C.it travels fasterD.it has fewer seats on it

【2】The regulations say that each bus may carry ______ passengers at most.

A.20B.40

C.129D.60

【3】What kind of letter is this passage?

A.It’s a letter of thanksB.It’s a letter of apology

C.It’s a letter of introductionD.It’s a letter of complaint

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】What are the speakers talking about?

A.What time to meet.B.Where to go dancing.C.What to eat for dinner.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】語(yǔ)法填空

Although English is not as old as Chinese, it is spoken by many people around the world every day. English 【1】(speak) are always making new words and we should be able to know where most words come from.

Sometimes, however, no one may really know where a word comes from. Did you ever think about why hamburgers 【2】(be)called hamburgers, 【3】(especial) when they are not made of ham? About a hundred years ago, some men went to America 【4】Europe. They came from a big city in Germany 【5】(call) Hamburg. They did not speak good English, but they ate good food. Some Americans saw them eating round pieces of beef. Never had they seen such a strange way. They couldn't help 【6】(ask) the Germans what it was. The Germans did not understand the question and answered, "We came from Hamburg." One of these Americans owned a restaurant, and had an idea. He made up 【7】mind to do something new. He cooked some round pieces of the beef like 【8】the men from Hamburg ate and 【9】(sell) it quite a few countries around the world.

Whether this story is true or not, it certainly is 【10】(interest).

查看答案和解析>>

同步練習(xí)冊(cè)答案