题型:阅读选择 题类: 难易度:普通
浙江省绍兴市诸暨市浣纱初级中学2024-2025学年九年级上学期9月月考英语试题
If you've ever used pi in math class, you probably used the number 3.14. In fact, the number for pi is much longer. Pi is called an irrational number (无理数) because the digits (数位) after the decimal point (小数点) never end or repeat.
In 2015, a young man from India named Rajveer Meena set a world record by memorizing 70,000 digits of pi. But pi is much longer than that.
On Pi Day ( March 14th) this year, a company called Solidigm said it calculated (计算) pi to105 trillion (万亿) digits. And the 105 trillionth digit is 6. It broke the record for how many digits of pi we know.
Pi is really useful for circles in math. It helps us connect the circumference with the diameter of a circle.
Even NASA scientists use pi for their work of studying space. But they only need about 15 digits of pi for their calculations.
Calculating pi also has another important use. It's how scientists test new computer programs and data storage systems (数据存储系统).
Solidigm's calculation of pi took around 75 days to finish. The company's owner Brian Beeler said that the achievement needed a lot of work. They had to plan the calculation very carefully.
This isn't the first time that Solidigm has calculated pi. In 2022, Google Cloud calculated 100 trillion digits of pi. Solidigm matched that in 2023.
In the future, we'll keep finding more and more digits of pi. We'll never be able to calculate all the digits of pi because it goes on forever. But it still helps us see how great computers can be.
"Robots, drones(无人机) and AI will do around 90% of the housework by 2040, " scientists from King's College said.
Mischa Dohler and Dr. Ian Pearson wrote a report to predict what homes will look like in 20 years. In it, they said that housework like washing the clothes and doing the dishes would be much easier because of technology progress(进步). If technology kept making progress, they expected that people would spend less than two hours a day in doing housework.
But most British people still don't believe their predictions. Just 2/5 of the people think that house robots will become a reality(现实) by 2040.
Predictions of Automation(自动化) by 2040 ▲ There will be house robots in people's homes. They will be able to do some of the housework all by themselves. Drones Small drones will be common. Some will keep the house clean, water plants and keep an eye on your house. Some will keep you warm with special light when you move around the house. AI Servants They will do almost everything for you. They will be able to pay the bills(账单), do some shopping and find ways to save your time and money. Super Smart Fridges They will learn what you eat. They can tell you how much food there is in the fridge, and even recommend(推荐) recipes. |
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