Imagineyou are taking a walk on the beautiful beach. Just then, your feet step oversomething and you hear a crack (噼啪声) —an empty plastic bottle. Things like thisare happening more often because of sea rubbish.

    Studiesshow that 80%of all the waste is from the land. The waste is mainly plastics (塑料制品) which are really hard todegrade (降解). So the rubbish will remain there for along time. Some of the pollution is caused accidentally. For example, about10,000 product-filled boxes are lost at sea every year from business ships.Sometimes people just throw things into the water from boats or land. Manylarge rubbish areas are formed in the North Pacific Ocean.

   Thankfully, the situation isn't ignored (忽视). Groups like the National Oceanic and AtmosphericAssociation (NOAA) are taking action to help clean the sea. Since 2006, 76projects have cleared out 3,814 metric tons (公吨) ofrubbish from the sea. Methods of rubbish cleaning include using machines toremove (移除) the waste away from the surface of seawater. Besides, special nets are set by the mouths of rivers to stop therubbish before it reaches the sea. If everyone does his part, sea rubbish seemslike a problem that can be solved.

 "Turn left! Turn right!" In the information technology(IT) class, Zhang Ruixuan was controlling a robot to move around.

"This is part of our artificial intelligence of (Al) courses," said the 10th grader from Beijing 101 Middle School. The school provide AI classes to both junior and senior high school students. Apart from compulsory(必修的),courses that teach basic knowledge, there are also optional(选修的) courses if students want to learn more.

"This semester of compulsory class, we have learned coding(编程) through a programming language called Python," said Zhang. Using Python to code is an elementary skill for training AI models. In recent years, Python has been tested in high school graduation exams in places like Beijing, Jiangsu and Anhui.

In fact, having Al education in schools has become a growing trend(趋势) in many places, with Zhejiang Province being a typical example. In 2020, Zhejiang added AI education into textbooks from Grade 5 in primary school all the way to senior high school. In the city of Wenzhou, the government is planning to build 1,000 AI experimental schools by 2025.

"With the development of technology, our textbooks have been changing all the time,"said Shang Yin, an IT teacher from Beijing 101 Middle School."From typing to using Word and Excel, and then today's coding and AI, the courses are keeping up with the times and teaching students necessary skills. In the future, there will be more jobs where AI knowledge is required.Even in daily life, people may need to understand things like ChatGPT and the Internet of Things. AI education will become increasingly important," Shang added.

①Sometimes you may find it hard to make more progress(进步) in your study. At this time, I think you need to change yourself. Here are some great ways for you to make more progress. 

②First, use notebooks. Take one notebook with you in class and write down what the teacher says. This way will help you remember things well. 

③Then, have a good sleep. Sleep is really important to each of us. Middle school students need to sleep at least(至少) nine hours a night. But do you know how to have a good sleep? First of all, try to keep the same sleeping time every night, even at weekends. Then, drink a glass of milk before you go to bed. I think these are good ways to help you have a good sleep. 

④Next, know when you work best. There are many studies showing advantages(好处) of night- time studying and early- morning studying. If you work late at night, make sure to give yourself some time to sleep in the morning. 

⑤Last, make good use of your learning way. Find out as many learning ways as possible(可能) first, and then try to find which way is appropriate for you and use it often. 

Most Americans eat three meals(餐) a day. They have breakfast in the morning, a simple lunch at noon and a big meal in the evening. They often eat breakfast and lunch in a hurry. For lunch they have hamburgers or sandwiches and they drink some fruit juice or coffee. Sometimes they have lunch in a fast food restaurant (快餐店). They can have a quick lunch there. They have more time for dinner. They often eat a nice and big dinner. They have soup(汤), beef, chicken, salad, fish and some bread. They also drink milk, fruit juice, coffee, tea or wine. They have dessert like pie, cakes and ice-cream.