【推荐1】What exactly is a lie? Is it anything we say which we know is untrue? Or is it something more than that? For example, suppose a friend wants to borrow some money from you. You say, "I wish I could help you but I'm short of money myself." In fact you are not short of money but your friend is in the habit of not paying his debts and you don't want to hurt his feelings by reminding him of this. Is this really a lie?

Professor Gerald Gullion of the University of Southern California has made a scientific study of lying. According to him, women are better liars than men, particularly when telling a "white lie", such as a woman at a party telling another woman that she likes her dress when she really thinks it looks awful. However, this is only one side of the story. Other researchers say that men are more likely to tell more serious lies, such as making a promise which they have no intention of fulfilling. This is the kind of lie politicians and businessmen are supposed to be particularly skilled at: the lie from which the liars hopes to profit or gain in some way.

Research has also been done into the changes of people’s behavior in a number of small, clearly unimportant ways when they lie. It has been found that if they are sitting down at the time, they tend to move about in their chairs more than usual. To the trained observer they are saying “I wish I were somewhere else now”. They also tend to touch certain parts of the face more often, in particular the nose. One explanation of this may be that lying causes a slight increase in blood pressure. The nose is very sensitive to such changes and the increased pressure makes it itch (痒).

Another gesture which gives away is what the writer Desmond Morris in his book Man Watching calls “the mouth cover”. He says there are several typical forms of this, such as covering part of the mouth with fingers, touching the upper-lip or putting a finger of the hand at one side of the mouth. Such a gesture can be understood, as an unconscious attempt on the part of the liar to stop himself or herself from lying.

Of course, such gestures as rubbing the nose or covering the mouth, or moving about in a chair cannot be taken as proof that the speaker is lying. They simply tend to occur more frequently in this situation. It is not one gesture alone that gives the liar away but a whole number of things, and in particular the context in which the lie is told.

【推荐3】Do you live in a city? You’ve probably noticed how noisy and crowded cities can be. What if you could live next to a tranquil lake or river instead?

As it turns out, living near water, such as seas, lakes, or rivers, can help us feel both happier and healthier. Those who live less than a kilometer from the coast (海岸) have less mental (心理的) health problems than those who live 50 km or more away, according to a study by scientists from the UK. People who visit the coast at least twice a week usually experience better health, too.

So how does a “blue space” make us feel better? For one thing, The environments around the water always have less pollution and more sunlight, both of which are related (相关的) to better health. People who get more sun are always happier than those who do not.

There’s also the air above the sea. After spending time near the sea, you might find that you feel more relaxed than usual. This is because sea air is full of negative ions (负离子). These ions balance our levels of serotonin (血清素). They can have an influence on our feelings. With balanced serotonin levels, we feel more calm and relaxed.

Finally, people who live near water always be more active. Water sports like swimming can help us stay in shape, which in turn keeps us healthy.

【推荐1】①“There are waves rushing across the sea. There are ships sailing under the sails on the middle of the sea. All through the spring has been filled with a rich and poetic atmosphere.” It’s a beautiful poem that was written in several seconds by ChatGPT. It is a powerful AI chatbot that can give you an answer to just about any question you have. It’s as if you could have a conversation with Google, a tool to search for information.

②New things always bring benefits for all walks of life. We can get information supported by thousands of web pages, with the information in a simple language. ChatGPT can also help people who are poor at foreign languages communicate effectively. In addition, using it as a teaching tool can help teachers save time. For example, ChatGPT provides teaching ideas and activities for classes. Another fun way is to ask for cooking ideas with the ingredients (原料) you have on hand. When used in this way, ChatGPT can be a great tool to make the world closer and better!

③ChatGPT is amazing, but it causes worries. For thousands of years, students have been required to find information from books and the Internet now. It requires a level of effort. Students who work hard usually get rewards and can see lots of different information. With ChatGPT, finding information becomes much easier than using the Internet or a book. It could make cheating much easier, and make students feel their hard work isn’t rewarded.

④ChatGPT also presents other problems. Nowadays, there are millions of people all over the world working in the ‘knowledge economy’. It may have influence on people, such as translators, scientists, teachers and writers. Because ChatGPT helps people get information easily, these jobs could become much easier. It may lead in the result that ___▲___, as their skills are no longer something companies need.

⑤It’s too soon to say what kind of effect ChatGPT will have on our lives. Let’s hope that its effects are mostly positive, if ChatGPT does become bigger and more popular. So what do you think?

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【推荐2】Don’t throw away your old phones. You are actually throwing away real gold! Smartphones contain many useful things such as gold, silver and copper (铜). People can recycle them to make new electronics (电子器件).

But many people may not know this. In Australia alone there are more than 25 million unused mobile phones lying around, Sydney Morning Herald reported. The gold in these phones can add up to a value of more than $80 million (542 million yuan). There are about 2 billion smartphone users around the world, who change their phone once every 11 months on average. In China, people generate (产生) 80 million old phones every year, according to New Express Daily.

However, it’s not easy to get the useful things out of the phones. Smartphones have not only useful things, but also harmful materials. Guiyu, a small town in Shantou, Guangdong, is one of the world’s biggest dumping grounds (垃圾倾倒场) for electronic waste, Reuters reported. Many recycling centers in Guiyu simply break the old electronics by hand and don’t think about the pollution it causes. According to a local government report, 81 percent of children in Guiyu are harmed by lead (铅) poisoning.

Veena Sahajwalla, a professor at Australia’s University of New South Wales, has made a mini factory. It makes smartphone recycling cleaner and easier. The mini factory is very small and easy to move around. It breaks the phones and automatically (自动地) removes the useful parts. That way, humans do not get poisoned.