2023年中考英语时事热点阅读专练
热点110 量子物理学与量子通信
一、阅读理解
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When it comes to modern communication, curity is a big concern. It ems like we’re forever hearing about hackers leaking(泄露) emails, passwords and other important personal information.
But thanks to a breakthrough by Chine scientists, who won the 2018 Newcomb Cleveland Prize in February, we may soon never have to worry about our data again. This is thanks to the satellite called Micius that us cutting-edge technology to nd and receive information.
Micius is the first satellite of its kind to u quantum key distribution(量子密匙分发), which u
s particles (粒子) that transmit(传输) light to transfer information from one point to another. Currently, it can communicate with two ba stations(基站), both of which are located high up in the mountains in two different areas of Tibet, around 1,200 kilometers apart. Data is nt between the satellite and one of the ba stations in the form of a ray of light. This makes it almost impossible for data nt and received using quantum satellite technology to be stolen, as the connection will be broken if someone tries to hack it.
“Any eavesdropper(偷听者) on the quantum channel attempting to gain information … can be found by the communicating urs,” the scientists wrote in the paper.
However, the technology does have a few limitations. For example, the process only works at night, as the information isn’t able to pass through sunlight.
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Despite the small issues, the scientific community across the world has reacted positively to China’s achievements in this groundbreaking project.
“This Chine experiment is a quite remarkable technological achievement,” Artur Ekert, a professor of quantum physics at the University of Oxford, told BBC News.
And Karl Ziemelis, an editor for Nature, told Xinhua, “It’s a testament(见证)to China’s investments and significant efforts in the physical sciences that this group has been able to push rearch in practical quantum communication technologies to such an astronomical(天文学的)height.”伤感的文章
1. According to the passage, why Micius is safe for transporting messages?
A. Becau it is only data ba located in space, which cannot be touched.
B. Becau it only works at night, as the information isn’t able to pass through sunlight.
C. Becau it us particles that transmit light to transfer information from one to another.
D. Becau it doesn’t score any important private information like passwords and e-mails.
2. Which of the following can best describe scientists’ words in the paper?
A. It gave out the working principle of Micius.读原著
B. It tells of a kind of scientific appearance.
C. It warned hackers not to steal information from Micius.
D. It is a more apparent explanation of its safety.
3. What’s the main problem of Micius?
项目启动会A. Its core technology is controlled in foreign countries.
电脑如何连接蓝牙耳机B. Light is a must in its working process.
C. Its safety performance needs improving.
D. Sunlight has a deadly influence on its working.
4. What’s the best title of the passage?
A. Leaping into an age of cure data
B. How should you avoid information hackers
智能校园C. Old Problem, New Approaches
D. Taking on data theft
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Top Trends in IT for 2021
Quantum computing
Like its name suggests, quantum computing is bad on the principles of quantum theory.
Different from traditional computers, quantum computers can handle complex operations at speeds much faster than traditional computers without needing as much energy.
Quantum computers have proven to be especially helpful during the pandemic of COVID-关于人生的名言名句
19. For instance, they were ud to arch for potential vaccines and find other treatments to help affected people. Its potential will be explored more in 2021.
Working from home
"There is no real going back to normal,” Gerard Grech, CEO of networking company Tech Nation, told Wired magazine, "The pandemic has given us an opportunity to rethink how we work and why.”
After working from home for much of 2020, some companies noticed an increa in productivity, when their employees worked remotely. Not only that, but providing this option can also help cut down operating costs for companies.
This is great news for workers, too, as many people have wanted more flexibility with their work. More types of workspaces with work from home options will grow rapidly this year.
Cybercurity
植树作文400字Cybercurity has recently become more important becau people are more dependent on working online. In fact, according to Forbes, hackers took advantage of the pandemic and incread cyber-attacks worldwide.
