If you look at the top of your phone, you wil...

If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G. The G stands for the“generation（代）”of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.

On March 30th,2019, Shanghai vice-mayor（副市长）Wu Qing made the first 5G video call on a Huawei Mate X smart phone, CGTN reported. Shanghai has also become the first city in China to start testing 5G metworks.

About 100 times faster than 4G networks. 5G will let people download and upload data faster than ever before. But 5G won’t just bring faster mobile Internet. People can use it for many other things as well.

For example, 5G will help to make self-driving cars safer. Today’s self-driving test cars have one problem lag（延迟）. When the car“ sees ”an obstacle（障碍物）, it sends the information to a data center and receives instructions. However, it takes time to send and receive information. With this kind of lag, the cars might crash because they don’t receive instructions in time. With 5G, this lag will be great lowered , making the cars safer, according to CNN.

5G could also be used to power the Internet of Things（IoT 物联网）. This refers to a large online network that connects all things and people. Fast Internet speeds will be the key to develop this technology.

The IoT could be used in a lot of ways. For example, with IoT, your refrigerator could automatically place an order online for eggs when it finds that there are no eggs left inside.

根据短文内容,选择最佳答案.

1.In which city was 5G networks tested for the first time?

A.Beijing. B.Shanghai. C.Shenzhen. D.Guangzhou.

2.The writer uses self-driving cars as an example to______________ .

A.explain how self-driving cars work

B.show us how advanced self-driving cars are

C.warn about the possible dangers of self-driving cars

D.explain how 5Gs fast speed can be helpful

3.According to the story, the loT is __________________.

A.a robot that can do housework

B.an online store where you can buy anything

C.a large online network that connects things and people

D.a type of high-tech refrigerator

4.We can infer（推论）from the passage that _______________.

A.5G will be all over China. B.there are no symbols at the top of our phones

C.we can now buy self-driving cars D.5G networks are much faster than 3G and 4G

5.The refrigerator is mentioned to 　　 .

A.describe the importance of IoT B.introduce how to use the IoT

C.ercourage people to try the new product D.show 5G will be more powerful

九年级英语阅读单选中等难度题查看答案及解析

If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G.1. But these symbols will become things of the past after 5G networks fully arrive.

On March 30, 2019, Shanghai vice mayor Wu Qing made the first 5G video call on a Huawei Mate X Smartphone.2.

About 100 times faster than 4G networks, 5G will let people download(下载) and upload data (数据) faster than ever before. But 5G won’t just bring faster mobile internet.3.

For example, 5G will help to make self-driving cars safer. Today’s self-driving test cars have one problem—lag(延迟). When the car “sees” an obstacle(障碍物), it sends this information to a data center and receives instructions.4.With this kind of lag, the cars might hit each other because they don’t receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer.

5G could also be used to help the internet of things(IoT). IoT is a large online network that connects all things and people. Fast internet speeds will be the key to developing this technology. 5.For example, with IoT, your refrigerator could automatically(自动地) place an order online for eggs when it finds that there are no eggs left inside.

A.Shanghai has also become the first city in China to start testing 5G networks.

B.5G will help us buy eggs quickly.

C.People can use it for many other things as well.

D.However, it takes time to send and receive this information.

E.The “G” is the “generation(代)” of your mobile network.

F.The IoT could be used in a lot of ways.

G.5G networks are much faster than 4G or 3G.

九年级英语补全短文7选5中等难度题查看答案及解析

If you look at the top of your phone, you will usually see a little symbols that says 3G or 4G. The G means "generation" of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.

On March 30, Shanghai vice-mayor (副市长) Wu Qing made the first 5G video call on the Huawei Mate X Smartphone. Shanghai has also become the first city in our country to start testing 5G networks.

More and more people started to learn about 5G because it has many advantages. 5G will let people download and upload the data (上传数据) faster than before. People can use it for many other things as well. For example, 5G will help to make self-driving cars safer. Today's self-driving test cars take time to send the information and the receiving instructions. They can't react in time. With the help of 5G, this can be greatly improved.

People could also use 5G to power the Internet of Things (IOT 物联网). It's a large online network that connects all things and people. Fast Internet speed will be the key to developing this technology.

5G is on the way. It will lead us to a new world. Are you ready?

九年级英语填空简单题查看答案及解析

(根据短文内容按要求完成任务，并将答案写在答题卡的相应位置上。)

It is everyone's duty to help animals to stop extinction (灭绝). As a student, there are so many things you can do yourself too! Please look at the following tips (建议) to help the endangered animals.

Send a letter to your local environment protecting center and show how you feel about the quick extinction of animals. Use the facts to write what you have found. Give some advice to the officers who make the strong rules to save animals.

Draw pictures and make a poster. Put this poster somewhere at school or where people will usually see it. Add some texts in the sign to make it clear why you care about the loss (丧失) of animals. It may encourage people to do something to protect the animals.

Avoid buying things that come from endangered species (物种). When you travel, be careful about what you buy. You shouldn't buy things made from endangered animals or endangered tree species from forests that the animals live on.

Watch your diet. Before eating meals, you should see if you will break a food chain. If you see somebody doing something bad for the food chain, please stop him at once.

1.Who make rules to save the endangered animals?

2.Where should we put the poster?

3.Is it right to buy a gift made of ivory (象牙) while travelling?

4.Why should we watch our diet?

5.What is the writer's purpose according to the passage?

九年级英语回答问题中等难度题查看答案及解析

Has anyone ever told you that eating carrots will help you see in the dark? This is just one of many incorrect beliefs you may have heard. Below, TEENS has picked out scientific explanations for three mistakes that people make about their eyes. Let's take a look.

Can eating carrots improve your eyesight?

Carrots are rich in vitamin A, which helps the eyes to turn light into information for your brain. This allows people to see in darker places. However, eating more carrots won't help you see better. A certain minimum amount will help, but a large number of carrots will not give you superhuman vision.

If your parents have bad eyesight, will you have bad eyesight, too?

Myopia( 近 视 ) can be passed from parents to children. A study by the American Optometric Association found that if both parents are myopic, there's a 33 to 60 percent chance that their child will be. For children who have one parent with myopia, the chance is 23 to 40 percent, and it's down to 6 to 15 percent for kids with non-myopic parents. So if your eyesight is bad, your children might still have good vision.

Do color blind people see the world in black and white?

Color blindness doesn't usually mean that people see the world like an old movie. They usually can't tell certain colors apart, especially green and red. Another commonly confused pair of colors is yellow and blue. Our eyes have cone cells (视锥细胞) that sense different wavelengths of light. If these cells don't work properly, color blindness occurs. There are different levels of color blindness. Some people are only color blind in low light. However, in the most serious form of color blindness, everything is shades of gray.

1.According to the article, eating carrots________.

A.stops the brain from seeing B.doesn't help you see better at all

C.will help you see clearly in the dark D.is good for your eyes to some degree

2.If both parents have myopia, their child's chance of having good eyesight is________.

A.40-67% B.33-60% C.23-40% D.6-15%

3.The underline word“occurs”in this passage probably means________.

A.恶化 B.发生 C.改善 D.加深

4.What is the cause of color blindness according to the text?

A.Watching movies for too long . B.Getting too little exercise.

C.Cone cells not working properly. D.Changes in the wavelength of light.

5.What is the purpose of the article?

A.To offer some advice on protecting your eyes.

B.To clear up some misunderstandings about our eyes.

C.To provide help for improving your vision.

D.To explain how bad eyesight and color blindness form.

九年级英语阅读单选中等难度题查看答案及解析

If you look at the top of your phone ,you'll usually see a little symbol that says 3G or 4G. The "G" stands for the "generation" of your mobile network.But these symbols will become things of the past after 5G fully arrives.

On March 30th, 2019, Shanghai vice-mayor Wu Qing made the first 5G video call on a Huawei Mate X smartphone, CGTN reported.Shanghai has also become the first city in China to start testing 5G networks.Monaco became the first country in Europe to use a next-generation 5G mobile phone network based on technology from Chinese company Huawei.

It sounds obvious, but it’s important to understand just how much faster 5G is compared to current 4G speeds. 5G will not only be many, many times faster than your existing connection, it will be greatly faster than the broadband connection you have at home.

Now, 4G takes about 100 to 200 milliseconds* to send and receive data.But 5G will get it down to 1 millisecond or less.This big change will not only make our mobile Internet faster. It can be used in many other ways as well.

For example,5G will help to make self-driving cars safer.Today's self ﹣ driving test cars have one problem ﹣ lag.When the car"sees"an obstacle*, it sends this information to a data center and receives instructions. However, it takes time to send and receive this information. With this kind of lag, the cars might crash because they don't receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer,according to CNN.

5G could also be used to power the Internet of Things (IOT). This refers to a large online network that connects all things and people.Fast Internet speeds will be the key to developing this technology. For example, with IOT under 5G, your fridge could automatically* place an order online for eggs when it finds that there are no eggs left inside.

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. Though we’ve seen a lot of positive progress just in the last year, we still have a long way to go before 5G is anywhere near as common as 4G is right now.

1.From Paragraph ②, we can know that _______.

A.5G is widely used in Shanghai

B.it took lots of efforts to test 5G

C.China and Monaco is working on its 5G networks

D.5G would make it possible to take videos

2.The underlined word "lag" probably means " _______" in Chinese.

A.延迟 B.迷路 C.暂停 D.耗电

3.The fridge is mentioned to _______.

A.describe the importance of IOT

B.encourage people to try the new product

C.introduce how to use the Internet of Things

D.show 5G would make IOT more powerful

4.Which of the following would be the best title of the passage？

A.Can 5G Go Far？

B.How is 5G Changing Our Life？

C.5G is on the Way

D.China is Leading the World in 5G

九年级英语阅读单选中等难度题查看答案及解析

判断正误　 阅读下面的材料，判断下列句子是否符合短文内容。符合的填涂“T”，不符合的填涂“F”。（T=True，F=False）

More and more people are using mobile phones now. Smart phones are used as televisions, cameras, and music players. They are also used for sending e-mails or surfing the Internet. If someone talks about mobile phones, many Chinese will think of Huawei.

In China, even in the world, Huawei is a wonder (奇迹). Ren Zhengfei built up (创建) Huawei company in 1987. The company sold 58.4 million smart phones in the first season of 2019. Huawei has got the second place at the mobile market.

Now, Huawei has been the leader in 5G field. It has more than 75,000 top engineers and scientists on research. They try their best to bring digital (数码) and high technology to every person and place. It's more convenient for modern people to live in a rapid way. What a useful technology 5G is!

We are looking forward to seeing a stronger Huawei. It provides a faster and better communication way for us. It also brings “Created in China” to the world.

1.You can use Huawei mobile phones to take photos.

2.Ren Zhengfei set up Huawei company in 1987.

3.Huawei has got the first place at the mobile market.

4.Few top engineers and scientists work on research in Huawei company.

5.Huawei gives us a slower communication way.

九年级英语阅读判断中等难度题查看答案及解析

This might sound like a usual day for you. You look at your phone in the morning and read news stories from around the world. Your parents take you to McDonald’s to have dinner, which kids of your age _______also have for dinner in other countries. Then, your family starts to plan your trip abroad for the summer holiday.

So do you feel like you are a global citizen (世界公民)? More people are _______ themselves global citizens. Researchers from the BBC World Service asked more than 20,000 people from 18 _______about this as part of a report.

But _______is “global citizenship”? For some, it means the easy communication. To others, it might be a________of responsibility (责任) about problems like weather change. And for many, it is about being able to  ______elsewhere, according to the BBC.

The BBC also found that people in rising economies (新兴经济体) feel like they are becoming_______global. “They feel their voices are more likely (可能的) to be _______than they were 20 years ago,” said the report’s author Lionel Bellier. However, people in developed countries are more likely to see the________sides of globalization, such as job loss.

But generally speaking, the world is ______more and more interconnected.

1.A.must B.should C.might D.need

2.A.calling B.caring C.working D.imagining

3.A.families B.schools C.companies D.countries

4.A.why B.what C.how D.where

5.A.sound B.sense C.knowledge D.voice

6.A.fit B.leave C.move D.visit

7.A.more B.less C.nearly D.hardly

8.A.refused B.forgot C.remembered D.heard

9.A.good B.dangerous C.bad D.bright

10.A.feeling B.leading C.becoming D.changing

九年级英语完型填空中等难度题查看答案及解析

阅读下面的短文,从短文后的选项中选出能填入空白处的最佳选项补全短文。选项中有一项为多余选项。

Mark Twain once said, "Never put off till tomorrow what you can do today. " The famous writer talked about a problem many of us have. The problem is procrastination（拖延症）. When procrastination becomes a habit, it can make our lives terrible. However, everyone can avoid it by taking a few simple steps today!

Make daily “to do” lists.

Before your day ends, make a plan for tomorrow. List upcoming tasks in order of importance.

You'll begin each new day with a head start, already knowing what needs to be done. As you complete each task, check it off. 1. .

Always keep your daily schedule（计划）with you. Use it to remind yourself what you need to do next. You'll then have a much better chance of carrying out your plans.

Break large tasks up into small ones.

If a project looks too big,2.. The task at hand may seem too great. You may feel defeated（失败）before beginning. But every project is doable if it's done in small steps.

Begin by breaking up your task into smaller parts. This helps remove the unnecessary fear of having to do a large project all at one time.

3..

If your workplace is full of distractions（使人分心的事）, you'll need to make some changes. You may need to remove your phone or TV from your workplace. If people often stop by for a talk, you may need to move to a different place.

Follow the five-minute rule.

The hardest part about any task is getting started. That's why so many people avoid their work until the last minute. Doing so usually leads to added stress. One solution to this problem is to schedule a time daily to work on your big project. Work on it for only five minutes. Then decide whether or not to continue. Surprisingly, once you’ve begun,4..

A.you will certainly succeed at once

B.Change your working environment

C.This will give you a sense of success

D.it can discourage you from getting started

E.you may be able to keep going and finish the task

九年级英语补全短文5选4困难题查看答案及解析

Imagine you’re enjoying dinner with your friends at a nice restaurant. You’re having a great time when suddenly you hear a phone ringing at the table next to you. A man takes out his phone and starts talking about problems he’s having with his girlfriend. He keeps talking for almost ten minutes. How will you feel? Maybe you will feel uncomfortable,（A）_________ you can do nothing about it.

This happens all the time, not only in restaurants, but also on buses, at the cinema everywhere!

Cell phones are useful in our daily lives. But be careful not to be noisy phone users and disturb(打扰) others. You are supposed to control your own behavior. Here are a few rules.

Follow the rules! When you’re in public places and see a sign that says “Turn off cell phones” don’t use your phone. If you are allowed, speak softly for a short time and try to keep away from other people.

①_________ Never make calls in a theater, when you are watching a movie or enjoying a concert.

②_________ Talking on a cell phone while driving is dangerous. And watch where you’re going when you’re walking down the streets and talking on the phone.

As more people use cell phones, things are going to get worse. So, the next time you’re getting ready to make a call, stop and consider the people around you.

1.选择最佳句子补全文章，将字母代号填写在答题卡上。

A. Phone off　　　　　　　　 B. Pay attention

①._________　　　　　

②._________

2.从文中找出与It’s not safe to talk on a cell phone when you are driving意思相同或相近的句子。

______________________________________________________

3.在文中A处填入合适的连词，使句子完整。_________

4.回答问题。What should you do if you are allowed to use your phone in public places?

________________________________________________________________________

5.根据短文内容填空。每空一词。

The main idea of this passage is to tell people the ①_________ of using cell phones in public places. And according to the writer, when you use your cell phone in public places, you should ②_________ about the people around you.

九年级英语多任务混合问题中等难度题查看答案及解析