Taking pictures of an empty plate is becoming popular in the canteens（食堂）at Shenzhen University（SZU）, a report by Shenzhen Economic Daily showed.

According to the Daily, Tencent is now working with SZU to introduce AI technology to a campaign on WeChat to encourage "clear your plate". The campaign is to reduce food waste and encourage students to save food.

After finishing a meal, students can take photos of their plates and send them to the AI system. Once their photos are accepted, students can get a reward. Tencent's AI Lab provides technological support for the campaign. It takes only 40 milliseconds for the system to check a photo.

A total of 20,000 students at SZU took part in the second phase of the campaign on Monday and Tuesday. And the food waste has dropped greatly after the campaign was started.

"By using AI technology to encourage the 'clear your plate' campaign, our university can have a better understanding of students — main role in the campaign so as to carry out a rewarding system for keeping students interested in it," said Xu Xiaoling from SZU's student department.

The service has also been used in other universities in China, including Shanghai Jiao Tong University, China Academy of Art in Zhejiang Province and Jishou University in Hunan Province, attracting over 100,000 students so far.

I have had thousands of classes since I started school nine years ago. But only one1was the most important. It happened last term just after I had got a2result in an exam. I was sad and lost my confidence. I decided to go to a class which can tell me how to be3. The speaker walked into the room. But he did not start talking4a teacher. Instead, he held up (举起) a twenty yuan note (钞票) !

"Who wants this?" he asked slowly.5of us in the class put up our hands.

The speaker smiled. Then he put up the note on the blackboard and asked the same question. Again, we all put up our hands. The speaker smiled again, but6nothing. Suddenly, he threw the note onto the floor! Then he asked the same question a third time.

I didn't7what the speaker was doing. Why was he asking the same question again and again? I didn't know what to do. I wanted the note, so I put my hand up again. After a while, he8a note and started to laugh. "You have all just told me how to become successful, he said to us with the note in his hand. "The note is worth (价值) twenty yuan. It is always worth twenty yuan, even though I throw it on the floor. You are like the note. No matter9happens to you, you still have your worth."

When I heard those words, I was deeply moved. Suddenly, I10I was worth a lot. I may have done in an exam, but it doesn't mean I can't do well in the future. If I believe in myself, I will be successful!

You've been learning words since you were a tiny baby. At first, you learned them only by hearing other people talk. Now that you're a reader, you have another way to learn words. What should you do when you come to a word and you think you don't know what it means? .

Say it

First sound it out. Then say it to yourself. . Sometimes you know a word in your head but you don't know what it looks like in print. So if you match up what you know and what you read — you have the word!

Use context

If this doesn't work, take the next step: look at the context — the other words and sentences around it. Read this sentence: When it rained, the dog looked for shelter in the doorway. . Rain and in the doorway might give you helpful information.

If the context doesn't help, look at the parts of the word. Does it have any parts you know? These can help you understand what it means. If you don't know the meaning of miner, try looking at parts of the word. You might know that a mine is a place underground where people get coal and other valuable things. A lot of times, -er at the end of a word means "a person who does something". So a miner might be someone who works in a mine.

Look it up

If the three steps above don't work, you can look it up.  — either a book or online.

Nobody knows the meaning of every word, but good readers know how to understand words they don't know.

要求：

1）包含提示中的所有内容，可适当发挥；

2）意思清楚，表达通顺，行文连贯，书写规范；

3）词数80词左右（开头和结尾已给出，不计入总词数）；

4）文章中不得出现真实姓名和校名。

5）参考词汇：出差 take business trip; 争吵 quarrel

Dear Emily,

I feel sorry to hear of your problems. In your letter, you said that

Yours,

Jerry

In the state of Qin, there was a man called Shang Yang. He was a statesman（政治家）and worked out many reforms（改革）, like focusing（关注）on farming and giving rewards（奖励）to soldiers who were successful at war. But this reforms were not easily carried out at first. Most people didn't trust Shang.

To solve this problem, Shang came up with an idea. He put a thin wooden pole（杆子）at the south gate of the capital of Qin. Many people came to see him.

Then, in front of the crowd, he said loudly: " Anyone who can move the pole to the north gate will get 10 gold pieces."

It was a simple job and the reward was large. However, some time passed and no one stepped forward. They all thought Shang was joking.

Hearing no answer, Shang stepped forward and said, "The reward now goes to 50 gold pieces."

This offer was unbelievable. Finally, a man from the crowd came forward. He put the pole on his shoulders and walked to the north gate. True to his word, Shang gave the man 50 gold pieces.

After that, the people of Qin were all talking about what Shang did at the south gate. They believed he was a man of his word. So when Shang began carrying out his reforms, the people followed him. Under these great reforms, Qin grew strong and unified all the states, becoming the first empire of China.

Credibility（诚信）is very important for everyone. It will help people believe what they say and respect them.

Born in 701, Li Bai was one of the greatest poets of the Tang Dynasty. the age of 24, he left home and started to travel around China. Throughout (he) life, he wrote more than one thousand poems about nature

"To Wang Lun" was one of Li Bai's poems, which was about his friendship with Wang Lun, important person to him. It is said that Wang Lun respected Li Bai for his talent and dreamt of (see) him. When he heard that Li Bai was travelling to a place nearby, he wrote a letter to Li Bai invited him to visit his hometown. In the letter, Wang Lun pictured his hometown as having peach flowers extending ten li and ten thousand wine houses.

Li Bai couldn't find the scenes described by Wang Lun he arrived. Wang Lun explained that "peach flowers" was the name of a pool of water and Wang was the family name of the wine house (own). Li Bai laughed about Wang Lun's little trick. He understood that Wang Lun (true) wanted to see him and the two became good friends.

It (know) that Li Bai and the other poets of the Tang Dynasty have left many great poems to us. Together they created the" (gold) age" of classical Chinese poetry and they will always be remembered by Chinese people.

Do you know the two lovely mascots (吉祥物)? You may know the five "Fuwa" dolls from the 2008 Beijing Olympic Games. On September 17 of this year, the two lovely mascots first showed on TV. Now, let's see who they are.

Many people in different countries like the two mascots very much, and they show their love for them on the Internet.

Cui Chenxi is a (seven) grade student in a middle school in Shenyang. When he was preparing lessons before class, he noticed a mistake on a page of the English textbook. In one of the pictures, there is a hoverfly(食蚜蝇), and there is a word under picture to describe it. The word is "bee".

Cui reported the mix - up over the two insects to the textbook's publisher and (quick) got a reply. The publisher confirmed(确认) the mistake after (ask) a biology teacher. They said they would correct the mistake by replacing the wrong picture in a reprinted version. Besides, the publisher thanked the 12- year - old boy for reporting the mistake, and praised (he) for being "really professional ".

When asked how he (discover) the mistake, Cui said," It's simple. Bees have two pairs of (wing) while hoverflies have only one pair. Bees are fat with their round belies and hoverflies are thin. What's more, bees' tentacles (触须) are clear to see while those of hoverflies are difficult to see."

According to Cui's mother, the boy shows a great interest in biology. He raised 10 types of ants in his primary school days in order to find the insects' habits and how their work (do).

The family keeps hundreds of books about natural science. And Cui has a bookshelf of his own. Thanks to his parents, Cui doesn't need (take) after - school training classes. He's happy to learn what he loves.