Now we can see QR codes (二维码)in many places. We use the m phone to scan (扫描)QR codes. Then we can pay bills, get more information about something, add friends and so on. QR codes are u. Do you know who invented them and w he invented them?
Before QR codes were invented, people u bar codes(条形码). A bar code can't store(储存)so much information. A Japanese man wanted to solve(解决)the problem and he invented the QR code with his team. His n is Masahiro Hara.
Maybe in the future, you will find QR codes are not good enough and you may invent another kind of code. That will be great!
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C .
①What's this? A. It's in the classroom.
②Do you like doors? B. It's a big door.
③What colour is the door? C. Yes,I like doors.
④Where is the door? D. There are three doors.
⑤How many doors? E. It's red and yellow.
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Hello, everyone. Here's the weather report. It will be sunny in Beijing tomorrow. In Yinchuan, it will snow tomorrow. In Hangzhou, it will be cold. In Guangzhou, it will be hot. In Sanya, it will rain tomorrow. So take your umbrella when you go out. Thank you for listening.
I can get the public library this afternoon.
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