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
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
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
Very often, when we see young people sitting there, looking at the screen of a mobile phone and smiling, we may think nothing is wrong. But when we come to the question "how much time do they actually spend on media(传播媒介)daily?", the answer is surprising: young people spend about nine hours every day using media, and this only includes media used for enjoyment.
Today's young people seem to have become crazy multitaskers. They often use media when doing other activities. Some watch TV when doing homework, some text(发短信), and some others listen to music. But what do young people think of this? A research showed that two thirds of them believed watching TV or texting had no influence on their schoolwork. Half of them thought using social media made no difference. However, researches have given a different answer: "media multitaskers" did worse in tests.
Scientists did a research among more than 400 students. It shows that those who text a lot have more trouble sleeping and do worse in their study. In another research, students who didn't text during a lesson took down a lot more notes than those who were texting. A similar research also found that students who texted when doing schoolwork had lower overall(总体的)grades.
According to a research, if a kid uses social media a lot, especially at night, he or she will sleep worse and feel more nervous and depressed(消沉的). On the one hand, young people stay up late to check messages and information. They may also be woken up by messages they receive. On the other hand, even the light from a screen could influence their sleep. Some other researches also show that children who use media at night go to bed later, get fewer hours of sleep each week, and become sleepy more easily during the daytime.
1.The answer to the question in Paragraph l is surprising because young people ______.
A.spend about 9 hours on media for fun daily
B.often look at their mobile phones and smile
C.always sit there for a long time doing nothing
D.use different kinds of media to relax themselves
2.The underlined word "multitaskers" in Paragraph 2 refers to people who___________.
A.ask a lot of questions B.use different media for learning
C.have several mobile phones D.do several tasks at the same time
3.From the passage we can learn that a kid will probably ________ if he or she uses social media a lot at night.
A.become more worried B.get more excited
C.take fewer notes in class D.sleep much better
4.What is the passage mainly about?
A.Social media is very popular among young people.
B.Using media too much has a bad influence on young people.
C.The use of social media has both advantages and disadvantages.
D.Mobile phones are the main tools students use for school learning.
九年级英语阅读单选中等难度题查看答案及解析
Have you ever seen a person in the Moon? If you look closely at the Moon on some nights, you can see the face of a man in the Moon. Some people say that they can see an old man carrying sticks. Others see a girl reading a book. These pictures are made by the mountains and plains of the Moon.
Long ago people in England used to tell their children that the Moon was made of green cheese. Everyone knows that this is not true. The Moon is a large round rock. There is nothing on it. There are no trees or plants on the Moon. There are no rivers or seas. There are no living things. There is no air. It never rains on the Moon and everything is covered with dry, white dust. Not even a sound can be heard on the Moon.
The Moon is very hot when the Sun shines on it. But in the shade (背阴处) it is as cold as ice.
The Moon is much smaller than the Earth. It does not weigh as much as the Earth. If you went to the Moon, you would weigh six times less than you do now. Even a fat man would be able to jump high off the ground.
1.On some nights the Moon looks like______ .
A. an old man reading a book B. a star
C. mountains and plains D. the face of a man
2.The Moon is made of______ .
A. rivers and seas B. rock
C. dirt D. trees and plants
3.You can’t hear anything on the Moon because______ .
A. there are no living things on the Moon B. it never rains on the Moon
C. the Moon is a large round rock D. there is no air on the Moon
4.The Moon is______ .
A. very hot
B. very cold
C. sometimes very hot and sometimes very cold
D. covered with ice
5.On the Moon you could jump high in the air because______.
A. you would feel very happy
B. the Moon is very hot
C. the Moon is as cold as ice
D. you weigh six times less than on the Earth
九年级英语阅读理解中等难度题查看答案及解析
Have you ever seen a person in the Moon? If you look closely at the Moon on some nights, you can see the face of a man in the Moon. Some people say that they can see an old man carrying sticks. Others see a girl reading a book. These pictures are made by the mountains and plains of the Moon.
Long ago people in England used to tell their children that the Moon was made of green cheese. Everyone knows that this is not true. The Moon is a large round rock. There is nothing on it. There are no trees or plants on the Moon. There are no rivers or seas. There are no living things. There is no air. It never rains on the Moon and everything is covered with dry, white dust. Not even a sound can be heard on the Moon.
The Moon is very hot when the Sun shines on it. But in the shade (背阴处) it is as cold as ice.
The Moon is much smaller than the Earth. It does not weigh as much as the Earth. If you went to the Moon, you would weigh six times less than you do now. Even a fat man would be able to jump high off the ground.
1.On some nights the Moon looks like______ .
A. an old man reading a book B. a star
C. mountains and plains D. the face of a man
2.The Moon is made of______ .
A. rivers and seas B. rock
C. dirt D. trees and plants
3.You can’t hear anything on the Moon because______ .
A. there are no living things on the Moon B. it never rains on the Moon
C. the Moon is a large round rock D. there is no air on the Moon
4.The Moon is______ .
A. very hot
B. very cold
C. sometimes very hot and sometimes very cold
D. covered with ice
5.On the Moon you could jump high in the air because______.
A. you would feel very happy
B. the Moon is very hot
C. the Moon is as cold as ice
D. you weigh six times less than on the Earth
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 sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).
A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.
If a comet isn’t a star, what is it then?
Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.Many people perhaps have seen a comet. However no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.
An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.
1.A comet is like ________.
A. sun B. moon C. sunlight D. the earth
2.A large part of a comet is ______.
A. water and rock
B. water frozen into pieces of ice and mixed with iron
C. ice, iron and rock dust
D. only a few big pieces of rock
3.Maybe many people _______.
A. haven’t seen any comets B. have seen all comets
C. have seen a comet at daytime D. have seen a comet
4.Some comets keep coming back ________.
A. at any time B. at noon C. at regular times D. at daytime
5.Halley’s Comets came back _____.
A. in 1990 B. in 1980 C. in 1986 D. in 1989
九年级英语阅读理解中等难度题查看答案及解析
If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).
A comet sometimes looks like a star.Like a planet, a comet has no light of its own.It shines from the sunlight it reflects (反射).Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.
If a comet isn’t a star, what is it then?
Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock.When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it.These clouds, together with the dust, form a long tail.
Many people perhaps have seen a comet.However no one knows how many comets there are.There may be millions of comets, but only a few come close enough for us to see.
An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky.Some comets move out of our sight and never come back.Others keep coming back at regular times.A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again.Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986.Then people all over the world were outside at night to look at it.You will probably be able to see Halley’s Comets when it comes near the earth again.
1.A comet is like ________.
A.sun B.moon C.sunlight D.the earth
2.A large part of a comet is ______.
A.water and rock
B.water frozen into pieces of ice and mixed with iron
C.ice, iron and rock dust
D.only a few big pieces of rock
3.Maybe many people _______.
A.haven’t seen any comets B.have seen all comets
C.have seen a comet at daytime D.have seen a comet
4.Some comets keep coming back ________.
A.at any time B.at noon
C.at regular times D.at daytime
5.Halley’s Comets came back _____.
A.in 1990 B.in 1980 C.in 1986 D.in 1989
九年级英语阅读理解中等难度题查看答案及解析
If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).
A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth a comet goes around the sun, but on a much longer path than the earth travels.
If a comet isn’t a star, what is it then?
Some scientists think that a large part of a comet is water frozen (冻) into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.
Many people have seen a comet. However, no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.
An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley comet, because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s comet when it comes near the earth again.
根据短文内容,从题中所给的A、B、C、D四个选项中,选择最佳答案。
1.A comet is like.
A. the sun B. the moon
C. sunlight D. the earth
2.A large part of a comet is.
A. water and rock
B. water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few pieces of rock
C. ice, iron and rock dust
D. only a few big pieces of rock
3.Many people.
A. haven’t seen any comets
B. have seen all comets
C. have seen a comet at daytime
D. have seen a comet
4.Some comets keep coming back.
A.at any time
B.at noon
C.at regular times
D.at daybreak (拂晓)
5.When did Halley’s comet come close to the sun and the earth last time?
A. In 1656. B. In 1742.
C. In 1986. D. In 1996.
九年级英语阅读理解中等难度题查看答案及解析
The next time you look up at the sky and see a cloud that looks like Mickey Mouse or your favorite fruit, look again. It may not be a cloud, but a Flogo -- a logo that flies. It's a new form of advertising in the sky that's never been used before. It's a different way to market your products, logos, and events.
These funny logos are made with soap bubbles (肥皂泡) mixed with a little helium gas (氦气) ,which makes them lighter than air and float in the sky. Special machines are used to make these new funny Flogos. The machine, which can be rented for $ 2,500 a day, can make a Flogo every 15-25 seconds.
Flogos can fly much higher or lower if needed. They can last from a few minutes to an hour anywhere in the sky, depending on the weather conditions. Though they can fly up to 20, 000 feet, they usually float around at 300- 500 feet. Flogos are only white now, but people hope to have more colorful Flogos in the near future.
Flogos are Green, 100% environmentally safe, because the soap used to make the Flogo comes from plants and leaves. So this fun way of advertising is healthy and good for the environment.
1.Flogos are mainly used to _____.
A. advertise in the sky B. make funny bubbles
C. improve weather conditions D. see colorful clouds
2.Why are Flogos healthy and good for the environment?
A. Because they can float high and last for a long time in the sky.
B. Because there is a little helium gas mixed with soap bubbles.
C. Because the machines used to make them are special and expensive.
D. Because the soap used to make them comes from plants and leaves.
3.From the passage, we can infer that Flogos _____.
A. can fly for hours in the sky all day B. can have different colors at present
C. may be influenced by the weather D. may be the cheapest way of advertising
4.Which of the following can be the best title of the passage?
A. Machines -- Used for Flogos! B. Flogos -- Logos that fly!
C. Advertising -- Made of Fruits! D. Clouds -- Like Mickey Mouse!
九年级英语阅读单选中等难度题查看答案及解析