Your Internet experience must be uncomfortable when the net speed is too slow — it takes so long to open a web page and the reality shows you’re watching stops every few minutes. That can make you angry.
But it could be a thing of the past. On June 3, the Ministry of Industry and Information Technology announced that China’s major telecom carriers (电信公司) would start to provide 5G services.
1. What is 5G?
The “G” in “5G” refers to “Generation”. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and the Internet, and 4G made all of these things faster. The mobile network technologies are developing quickly.
Now 5G promises much faster data download and upload speeds, and more stable (稳定的) connections. This means that you will be able to download a complete HD movie in seconds and only experience a short delay (延迟) between sending and receiving data.
2.What changes will 5G bring us?
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely. Meanwhile, 5G-enabled wearable devices (设备) will be in use in hospitals. Besides,VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
3. Does 5G have any disadvantages?
According to the BBC, though 5G will make our lives more convenient, it will not be perfect. For one thing, 1 . On 4G networks, you can be 10 kilometers away from the nearest transmission base and hardly lose signal (信号). But 5G will only cover about 300 meters. And in order to use 5G, we will have to buy new products designed for 5G that are expensive at present.
1.“G” in “5G” means the generation of________.
A.the mobile network experience B.the mobile communication technology
C.the speed of data download and upload D.the delay in data exchange
2.According to the passage, the best sentence for the blank is 1 .
A.5G will not “travel” far B.5G will be used in a limited way
C.products designed for 5G is expensive D.5G has its both advantages and disadvantages
3.What is the passage mainly about?
A.Changes in the mobile technologies. B.The uses of 5G.
C.Disadvantages of 5G. D.An introduction to 5G.
九年级英语阅读单选中等难度题
Your Internet experience must be uncomfortable when the net speed is too slow — it takes so long to open a web page and the reality shows you’re watching stops every few minutes. That can make you angry.
But it could be a thing of the past. On June 3, the Ministry of Industry and Information Technology announced that China’s major telecom carriers (电信公司) would start to provide 5G services.
1. What is 5G?
The “G” in “5G” refers to “Generation”. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and the Internet, and 4G made all of these things faster. The mobile network technologies are developing quickly.
Now 5G promises much faster data download and upload speeds, and more stable (稳定的) connections. This means that you will be able to download a complete HD movie in seconds and only experience a short delay (延迟) between sending and receiving data.
2.What changes will 5G bring us?
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely. Meanwhile, 5G-enabled wearable devices (设备) will be in use in hospitals. Besides,VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
3. Does 5G have any disadvantages?
According to the BBC, though 5G will make our lives more convenient, it will not be perfect. For one thing, 1 . On 4G networks, you can be 10 kilometers away from the nearest transmission base and hardly lose signal (信号). But 5G will only cover about 300 meters. And in order to use 5G, we will have to buy new products designed for 5G that are expensive at present.
1.“G” in “5G” means the generation of________.
A.the mobile network experience B.the mobile communication technology
C.the speed of data download and upload D.the delay in data exchange
2.According to the passage, the best sentence for the blank is 1 .
A.5G will not “travel” far B.5G will be used in a limited way
C.products designed for 5G is expensive D.5G has its both advantages and disadvantages
3.What is the passage mainly about?
A.Changes in the mobile technologies. B.The uses of 5G.
C.Disadvantages of 5G. D.An introduction to 5G.
九年级英语阅读单选中等难度题查看答案及解析
Your Internet experience will be influenced, when the net speed is too slow-it takes so long to open a web page and the reality show you are watching stops every few minutes. That can be very unpleasant. But it could be a thing of the past after 5G networks fully arrive.
The "G" stands for the "generation" of your mobile network. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data (数据) and the Internet, and 4G made all of these things faster. About 100 times faster than 4G networks, 5G will let people enjoy a faster Internet speed than ever before. This means that you will be able to download (下载) an HD movie in seconds with a short delay (延迟). But 5G won't just bring faster mobile Internet. People can use it for many other things as well.
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely, as they will be able to communicate in real time and avoid unexpected dangers. At the same time, 5G -enabled wearable devices (设备) will keep doctors know what is happening to their patients and let them know in time if there is something wrong. Besides, VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
According to BBC, though 5G will make our lives more convenient, it will not be perfect. For one thing, 5G will not travel "far". On 4G networks, you can be 10 kilometers away from the nearest transmission base (传输基站) and seldom lose signal (信号). But 5G will only cover about 300 meters, meaning that we will need more transmitters so that we can get signals. And in order to use 5G, we will have to buy new products exactly made for 5G that are expensive now.
1.After 5G is widely used, ________.
A.opening a web page and the reality show can become a past thing
B.the Internet speed will be faster when we surf the Internet
C.we won't have the unpleasant feelings anymore
2.What can we infer from the Paragraph 2?
A.We cannot download an HD movie with 4G.
B.3G makes it possible for us to go shopping online.
C.Faster mobile Internet is the only improvement for 5G.
3.What does the writer mean to do in Paragraph 3?
A.To give examples about the convenience brought by 5G.
B.To show different opinions from the possible 5G users.
C.To question the possibility of using 5G in daily life.
4.According to BBC, ________.
A.you won't lose signals while using 5G
B.downloads of 5G overweight its upsides
C.5G can be used on certain mobile phones
5.What is the best title of the passage?
A.5G Is Being Widely Used.
B.5G Will Make Life More Convenient.
C.5G -A Perfect Technology for Fun.
九年级英语阅读单选中等难度题查看答案及解析
Your Internet experience is ruined when the net speed is too slow — it takes so long to open a web page and the reality shows you’re watching stops every few minutes. That can be very annoying.
But it could be a thing of the past. On June 3, the Ministry of Industry and Information Technology announced that China’s major telecom carriers(电信公司) would start to provide 5G services.
1 What is 5G?
The “G” in “5G” refers to the generation of mobile network technologies. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and the Internet, and 4G made all of these things faster.
Now 5G promises much faster data download and upload speeds, and more stable connections. This means that you will be able to download an entire HD movie in seconds and only experience a short delay(延迟) between sending and receiving data.
2 What changes will 5G bring us?
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely. Meanwhile, 5G-enabled wearable devices(设备) will be of great use in hospitals. Besides, VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
3What are the disadvantages of 5G?
According to the BBC, __________, it will not be perfect.
For one thing, 5G will not“travel” far. On 4G networks, you can be 10 kilometers away from the nearest transmission base and hardly lose signal(信号). But 5G will only cover about 300 meters. And in order to use 5G, we will have to buy new products especially designed for 5G that are expensive at present. All in all, there is still much to be done before 5G’s popularization.
1.“G” in “5G” refers to ___________.
A.the speed of the Internet B.the generation of the technology
C.the delay in information exchange D.the game on the smart phone
2.According to the passage, the best sentence for the blank is __________.
A.because it is quite expensive to get 5G products
B.5G has its own advantages and disadvantages
C.until hundreds of millions of Internet users use 5G
D.though 5G will make our lives more convenient
3.Which of the following is NOT true according to the passage?
A.2G let users send messages through phones. B.3G gave us mobile data and the Internet.
C.4G will make VR games more real and popular. D.5G will be used in the medical field.
4.What is the main idea of the passage?
A.An introduction of 5G. B.Changes 5G brings us.
C.The progress of technology. D.Disadvantages of 5G.
九年级英语阅读单选中等难度题查看答案及解析
Students be careful when they do chemical experiments in the laboratory.
A.must B.may C.need D.can
九年级英语单选题中等难度题查看答案及解析
The most frightening experience in my life _______ when I was 12. It was also the most uncomfortable day I have ever spent.
We left Heathrow Airport to go on holiday to Cyprus. My dad came to the airport. Unluckily he was working and had to stick _______ his work. After saying goodbye, we got on the plane. The take-off was fine. Later the air stewards(乘务人员) _______ us our meals. I was busy _______ when the plane rocked. My plate went flying. Most of the other passengers' plates fell too. I remember thinking that there must be food_________.
All of the lights in the plane turned _______ . The seatbelt signs came on. The plane kept on bumping. I was _______ that there might be a serious problem. I wished that my father was with us. Then in the dark we heard the _______ of the plane. He said, "I'm sorry, ladies and gentlemen. We are going through a storm. Please stay in your seats".
The air stewards also had to stay in their seats. There was no one _______ could clear away our plates and food. My drink had fallen on my trousers __________ I was so uncomfortable. There was thunder and lightning outside.
We had to sit like that for more than a(n) __________ while the plane bumped along. After a while I wanted to go to the toilet. So __________ everyone else, I was sure. The air stewards tried to stay calm and __________ .
It seemed like hours before we __________ to move again and clear up. I felt terrible after all that bumping around. __________ the plane landed in a safe way. We later found out that we had passed through one of the most violent(剧烈的)storms ever over the Mediterranean Sea(地中海)!
1.A.happened B.was happening C.will happen D.is happening
2.A.with B.in C.at D.for
3.A.saved B.invited C.served D.threw
4.A.eat B.to eat C.to eating D.eating
5.A.somewhere B.anywhere C.everywhere D.nowhere
6.A.on B.off C.up D.down
7.A.confident B.afraid C.pleased D.excited
8.A.captain B.passenger C.traveler D.inventor
9.A.which B.whom C.who D.whose
10.A.and B.but C.though D.because
11.A.month B.second C.day D.hour
12.A.was B.did C.will D.is
13.A.crazy B.shy C.polite D.nervous
14.A.allowed B.will be allowed C.were allowing D.were allowed
15.A.Recently B.Luckily C.Suddenly D.Immediately
九年级英语完型填空中等难度题查看答案及解析
—I love the Internet. I’ve come to know many friends on the Net.
— . Few of them would become your true friends.
A. I can’t agree more B. I’m pleased to know that
C. That’s for sure D. That’s not the case
九年级英语单选题中等难度题查看答案及解析
Lab work is fun but you must be careful. Listen carefully when your teacher reads and explains the rules before your first lab lesson.
LAB RULES | |
Throughout the lessons | * Do not enter the science lab without the teacher's permission(允许). * No food or drinks are to be allowed in the science lab. |
Before the Experiment | * Read all instructions carefully before every experiment(实验). * Prepare all apparatus(仪器)and put them in right places so that you will not knock them over while doing the experiment. |
During the Experiment | * If you are unsure of how to use any apparatus or how to operate, ask your teacher for help. * Never smell or taste chemicals unless your teacher gives permission. |
After the Experiment | * Wash all apparatus after use and return them to the places where they were. * Throw waste materials into proper waste baskets. |
First Aid | * Report all accidents to your teacher immediately. * If you spill any chemicals onto your body or clothing, wash with plenty of water and report to your teacher. |
1.You must know the LAB RULES ______ the first lab lessons.
A. before B. since C. during D.after
2.It is necessary for you to ______ before every experiment.
A. read all instructions carefully B. take enough food and drinks
C. smell chemicals immediately D. talk with your classmates.
3.If you are not sure of how to use any apparatus, ______.
A. read the rules carefully B. try them again and again
C. ask your teacher for help D. return all apparatus to the places where they were
4.The underlined word “spill” means ______.
A. 照射 B. 伤害 C.摔下 D.溅出
5.When you are in the science lab, you mustn’t ______.
A. be careful in order to prevent injury B. listen carefully when your teacher explains the rules
C. taste chemicals without the teacher’s permission D. throw waste materials into proper waste baskets
九年级英语阅读理解中等难度题查看答案及解析
Have you ever been ill? When you are ill, you must be unhappy because your body becomes hot, and there are pains all over your body. You don’t want to work, and you stay in bed, feeling very sad.
What makes us ill? It is germs(细菌). Germs are everywhere. They are very small and you can’t find them with your eyes, but you can see them with a microscope(显微镜). They are very very small and there could be hundreds of them on a very small thing.
Germs are always found in dirty water. When we look at dirty water under the microscope, we shall see them in it. So your father and mother will not let you drink dirty water.
Germs can be found not only in water but also in air and dust(灰尘). If you cut your finger, if some of the dust from the floor goes into the cut(割开处), some of the germs would go into your finger. Your finger would become big and red, and you will have much pain in it. Sometimes the germs would go into all of your body, and you would have pain everywhere.
1.Which of the following is true?
A.If things are very very small, they are germs.
B.If things can’t be seen, they must be germs.
C.Germs are only in dirty water.
D.Germs are everywhere around us.
2.Why don’t your parents let you drink dirty water?
A.You haven’t looked at it carefully.
B.Water can’t be drunk in this way.
C.There must be lots of germs in it.
D.Water will make you ill.
3.What’s the main idea of the passage?
A.Germs may make us ill.
B.Germs are in dirty water.
C.Don’t drink dirty water.
D.Take care of your fingers.
九年级英语阅读理解中等难度题查看答案及解析
Have you ever been ill? When you are ill, you must be unhappy because your body becomes hot, and there are pains all over your body. You don’t want to work, and you stay in bed, feeling very sad.What makes us ill? It is germs(细菌) .
Germs are everywhere. They are very small and you can’t find them with your eyes, but you can see them with a microscope. They are very very small and there could be hundreds of them on a very small thing. Germs are always found in dirty water. When we look at dirty water under the microscope, we shall see them in it. So your parents will not let you drink dirty water. Germs aren’t found only in water. They are found in air and dust.If you cut your finger, if some of the dust from the floor goes into the cut. some of the germs
would go into your finger. Your finger would become big and red, and you will have much pain in it. Sometimes the germs would go into all of your body, and you would have pain everywhere.
1.Which of the following is true?
A. If things are very very small, they are germs.
B. If things can‟t be seen, they must be germs.
C. Germs are only in dirty water.
D. Germs are everywhere around us.
2.What is a microscope used for?
A. Making very very small things look much bigger.
B. Making very big things look much smaller.
C. Helping you read some newspapers.
D. Helping you if you can‟t see things clearly.
3.Why don’t your parents let you drink dirty water?
A. You haven’t looked at it carefully. B. Water can’t be drunk in this way.
C. There must be lots of germs in it. D. Water will make you ill.
4.Which of the following is not true?
A Germs can be found both in water and in the air.
B. Germs can go into your finger if it is cut.
C. If your temperature is not OK, there must be germs in your body.
D. If your finger isn’t cut, there aren’t any germs on it.
5.What’s the main idea of the passage?
A .Germs may make us ill. B, Germs are in dirty water.
C. Don’t drink dirty water. D. Take care of your fingers.
九年级英语阅读理解困难题查看答案及解析
Have you ever been ill? When you are ill, you must be unhappy because your body becomes hot, and there are pains all over your body. You don’t want to work, and you stay in bed, feeling very sad
What makes us ill? It is germs(细菌). Germs are everywhere. They are very small and you can't find them with your eyes,but you can see them with a microscope. They are very small and there could be hundreds of them on a very small thing.
Germs are always found in dirty water. When we look at dirty water under the microscope,we shall see them in it. So your father and mother will not let you drink dirty water.
Germs aren't found only in water. They are found in air and dust. If you cut your finger,if some of the dust from the floor goes into the cut(割开处),some of the germs would go into your finger. Your finger would become big and red,and you will have much pain in it. Sometimes the germs would go into all of your body,and you would have pain everywhere.
1.What is a microscope used for?
A. Making very small things look much bigger.
B. Making very big things look much smaller.
C. Helping you read some newspapers.
D. Helping you if you can't see things clearly.
2.Why don't your parents let you drink dirty water?
A. You haven't looked at it carefully.
B. Water can't be drunk in this way.
C. There must be lots of germs in it.
D. Water will make you ill.
3. Which of the following is NOT true?
A. Germs can be found both in water and in the air.
B. Germs can go into your finger if it is cut.
C. If your temperature is not OK,there must be germs in your body.
D. If your finger isn't cut,there aren't any germs on it.
4.What's the main idea of the passage?
A. Germs may make us ill.
B. Germs are in dirty water.
C. Don't drink dirty water.
D. Take care of your fingers.
九年级英语阅读理解中等难度题查看答案及解析