Computer companies keep competing to build smaller devices (装置).They are finding new ways to put data (数据) into less space on a memory chip (内存芯片).
______ have been made smaller to fit on to the desktop, smaller again to fit on our laps and again to fit into our shirt pockets (口袋）.
Now, Stuart S.P. Parkin, an IBM researcher, is looking into a new idea in an IBM lab. If it proves successful, electronic devices can hold 10 to 100 times the data in the same amount of space. That means the iPod that today can hold up to 200 hours of video can store every single TV program broadcast (播放) during a week on 120 channels. Parkin thinks he is close to a breakthrough. This can increase the amount of data stored on a chip.
At present the flash drives (闪存卡) business is growing quickly. They are used in digital cameras, cell phones and PCs. Flash drives with multiple (多个) memory chips store up to 64 gigabytes (十亿字节) of data. A single chip is expected to reach about 50 gigabytes in the next five years.
However, flash memory has a problem. Although it can read data quickly, it is very slow at storing it. That has led the industry on a hunt for new storage technologies.
Scientists say Parkin’s new computer memory, called “racetrack memory (赛道内存）”, could begin to replace flash memory in three to five years.
1. 补全句子。If
2. 回答问题。What does the improvement (改进) of the electronic devices mean?
3. 在原文横线上填上合适的词。
4. 总结文章的主旨大意。
5. 把划线句子翻译成汉语。
相似题推荐
【推荐1】You might have noticed that sometimes, when you are playing mobile games, the picture suddenly freezes(卡顿)because the network speed is o slow. However, these annoying things will soon become a thing of the past, as China just issued commercial licenses (发放商用牌照）for 5G networks on June 6, 2019. This means that China's telecommunications companies will be able to offer 5G network speeds to users.
The "G" in "5G"stands for generation. IG 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 SG bring?
It will allow us to download an entire HD movie in seconds. The delay(延时)between sending and receiving data will be shortened. Now, 4Gtakes about 100 to 200 milliseconds, while humans have a reaction time of about 200 to 300 milliseconds. But 5G will get the delay down to I millisecond or less, which is almost real—time.
With the development of 5G, new kinds of technology will be created and used.
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 each other, traffic lights and road sensors.
5G networks will be powerful, but not perfect. They do have some disadvantages.
On one hand, 5G signals don't go very far. On 4G networks, you can be 10 kilometers away from the nearest transmission base(传送基站）and don't lose signal. But 5G maxes out at about 300 meters. On the other hand, 5G signals have a hard time going through walls and rains. This means we will need to build many small transmitters to make sure 5G signals can be received everywhere. Soon you may see small boxes on every street lamp and building.
1. Why does the picture freeze when we are playing mobile games?_________________________________________________________________
2. What does "G" in"5G"stand for?
_________________________________________________________________
3. How long will it take to download an entire HD movie with 5G?
_________________________________________________________________
4. What is the fourth paragraph mainly about?
_________________________________________________________________
5. What disadvantages do 5G networks have?
_________________________________________________________________
【推荐2】“Did you get a hongbao?” seems to be the question on everyone’s lips at the end of each lunar new year. Hongbao, also called red packet, is in fact a red envelope with gift money inside. It has had a long history. Long ago it was seen as a way of protecting children from evil (邪恶的) spirits. Later it developed into more general best wishes and a blessing (祝福) on the young. Now the tra—dition is as strong as ever.
These years, the tradition of giving hongbao has gone digital. Intenet companies including Tencent, Sina Weibo, Alibaba and Baidu enable people to send electronic hongbao on their smartphones.
Sending electronic hongbao has some advantages. First, it makes people closer to each other. You can send electronic hongbao to others no matter how far they are. Second, it can be sent to one person, or can be received by several people at the same time. Besides, you don’t have to pay any cost or wait as long as you would for a traditional bank transfer (转账). As a whole, it’s more convenient and simpler.
However, this new technological trend (趋势) also has a negative impact (负面影响) on the true meaning of the lunar new year holiday. Some elderly people complain that young people are so crazy about grabbing (抢)hongbao that they spare little time for them. What they do all day is to check their mobile phones if there’s electronic hongbao waiting for them to grab!
根据短文内容回答下列问题.
1. Why did people give children hongbao long ago?
2. How do people usually send hongbao now?
3. How many advantages about sending electronic hongbao are mentioned?
4. What are young people crazy about doing during the lunar new year holiday?
5. Do you like grabbing electronic hongbao? Why or why not?
Look! It’s a Smart Panda Bus. It looks like a panda with black ears and big eyes. It can carry 22 people and is about 12 meters long. It’s cute and smart.
The Smart Panda Bus uses AI technology (人工智能技术) and it can do a lot of things. The bus can drive by itself without a driver. But don’t worry! It’s very safe. When you get on the bus, you should show your hand. The bus can read your handprint (手印) and know who you are. There are also robots on the bus. You can talk to them and ask them for help. If there is a bad man on the bus, the bus will call the police. Inside the bus, there is a vending machine (自动售货机). You can buy breakfast or some drinks on the bus. This can save you a lot of time.
People in some cities, such as Hangzhou in Zhejiang, Jinan in Shandong and Deyang in Sichuan, can take the bus. Maybe in your city, you can also take it soon!
1题为完成句子；2~3题为简略回答问题；4题找出并写下第二段的主题句；5题将文中划线的句子译成汉语。
1. On the Smart Panda Bus, you can talk to
2. What does the Smart Panda bus look like?
3. What should you do when you get on the Smart Panda Bus?
4.
5.
Each mobile network generation is faster and more powerful than the one before it. 1G let us talk to each other. 2G let us send messages. 3G gave us data and the Internet. 4G made all of these things faster. What’s special about 5G?
5G has a very short delay between sending and receiving information. Now, 4G takes about 100 to 200 milliseconds (毫秒) to send and receive data. But 5G will get it down to 1 millisecond or less. This big change will deeply change our lives. Read on to find out how.
5G entertainment (娱乐)
5G networks are about 100 times faster than 4G. This means you can download a movie in seconds using 5G. The short delay of 5G will make the games feel even more real.
5G transportation (交通)
5G will also bring us safer self-driving cars. These cars can send signals to each other. They also talk to traffic lights and road sensors.
5G smart homes
5G also makes the Internet of things possible. Internet of things is a large network that connects everything to the Internet. Smart phones are part of it. For example, your toaster can automatically (自动地) start making breakfast after your alarm rings.
5G will change our life in many ways | ||
| What’s special about 5G? | 5G has a very short delay between sending and *It will get it down to 1 millisecond or less. | |
| 5G entertainment | The networks are about | |
| 5G will bring us safer self-driving cars. | ||
| 5G smart homes | After your alarm rings, your toaster can automatically start | |
【推荐2】Lao She is one of the greatest Chinese writers. He was named “the People’s Artist.” He was born in Beijing in 1899. His mother sent him to a teacher-training school in 1913. In 1924, Lao She left China for England. He taught Chinese at a college in London and he came back to China in 1929.
He wrote many plays, novels and short stories about people’s lives. Teahouse is one of Lao She’s most famous plays. It was written in 1957. The play shows the daily lives of the common people in China from the end of the 19th century to the middle of the 20th century. It tells us the story of Wang Lifa and the customers of his teahouse in Beijing. It describes the changes in Chinese society over fifty years.
1. Lao She was born
2. Lao She was named “
3. At the age of
4. In 1929 Lao She
5. The play “Teahouse” shows
Headaches have many causes. We often say, “Take two aspirins.” It is not always the best idea. First, stop and think why you have a headache.
* Do you drink lots of coffee, tea or cola? These all have caffeine. People who take a lot of caffeine every day often get headaches. The cures? Drink a little of these every day. Take a week or ten days to stop it all.
* Do you get a headache after reading or watching TV? Some headaches happen when you make your eyes work too hard. See an eye doctor. You may need glasses.
* How much did you eat today? Eating nothing can also cause a headache. The cure is to eat three meals a day, at regular times.
* Do you read too much in poor light? These kinds of headaches are often seen. To feel better, try drinking enough water and putting ice on the back of your neck.
As there is no single way to prevent or cure headaches well enough, these ideas are possibly to hear
1. 请从下列选项中选出符合要求的选项(多选)The cures of headaches:
a. eating nothing b. taking a lot of caffeine c. drinking water d. wearing glasses
e. watching TV f. reading g. putting ice on your neck
2. 选出能完成下列句子的选项，并将其编号字母写在相应的横线上。
a. the best b. a headache c. too hard d. your neck
A. Eating nothing can cause
B. Reading may make your eyes work
C. Put ice on the back of
D. The usual idea of taking two aspirin is not always
3. These指代的是
4. List at least 3 causes of headaches.
5. What’s the main idea of the last sentence?
