One day I was watching a movie at home and tears dropped from my eyes as I saw a touching scene. My three-year-old son came to me and asked me why I was crying. I kept silent as I couldn't explain1 him it was just an emotional thing. To my surprise, he2 my face with his little hand and said, "Dear Mom, stop crying! You see everything will be fine. You're my good girl. So just get up and let's get ready for school. " On hearing him saying this to me I could not help3 . It was so funny for a child to say so. Later I4 that he had repeated almost the same thing that I told him when he was crying.
The first time a child begins to speak, he tries to copy what his parents have been telling him for a long time. Usually parents start with the words "Mama", "Papa" and so on. But as the child5 learning and possibly starts speaking on his own without being6 , we as parents always forget he's still being tutored by us.
We always use words7 we don't want our child to say and when he says those words, we wonder where he has learned them. Even then, some of us don't realize that the child has learned the words from us only. 8 , we start to put the blame on either his friends or somebody who has talked to him when we are not present.
So if you want your child to have perfect9 , you'll have to set a good example for him. And if you can't do that, you have no right to expect your child to have such a thing. After all, the parents' words and behavior have a great10 on their child.
Deng Qingming is one of the three Chinese astronauts carrying out China's Shenzhou-15 spaceship mission. He (final) got the chance to go to space after nearly 25 years of preparation.
Deng was born in a village in Jiangxi Province in 1966. As his parents both worked in the fields, he had to look after his younger brothers and sisters. At that time, his dream was to go to college and find a job (support) his family.
Deng a member of the PLA Air Force (空军) since 1984. When he left his village that year, his friends came to say goodbye to him. He was deeply touched and decided to work hard. Years of hard (train) made him an excellent pilot, and he was chosen as one of the (one) group of Chinese astronauts in 1998.
For a long time, Deng served as a backup (后备) astronaut. His road to space was (long) than that of his teammates. He spent almost all of his time preparing and waiting and he (give) the chance to travel to space in the end.
Besides that, Deng's wife supported him a lot. She took care of the whole family and never complained. "You've set example to our daughter and we are proud of you, " she told him.
After a long wait, he (fly) into space by Shenzhou-15 spaceship in November 2022 at last. Twenty-five years was quite a long time, but Deng never gave up. the nation needs him, he is always waiting there, ready to take on any challenge.
Seventy years ago, China was a poor country. But seventy years later, the country has made progress in many areas. It has become a rising power in the world. Now we'll take a look at some of China's biggest changes.
| AI China is paying great attention to the development of AI. According to the research, China's main advantage lies in intelligent robots. And the main problem for AI development in China is not short of money but short of technology and talent. China plans to become a worldwide AI innovation(创新) center by 2030. |
| People-to-people exchanges Today, Chinese people are having more exchanges with people around the world. With the support of the government, many Chinese are going abroad to study and do research. China has also set up 536 Confucius Institutes(孔子学院) in more than 150 countries. Millions of students are learning Chinese language and culture there. |
| Olympic dreams Many Chinese players have surprised the world, including Yao Ming and Liu Xiang. The country has held more sports activities. The 2008 Beijing Summer Olympics and the coming Winter Olympics are parts of the great achievements. From February 4th to 20th, in 2022, China will host the Beijing Winter Olympics. |
| High-speed rail China has built the world's largest high-speed rail network, which is still spreading. Last year, the network reached 290, 000 kilometers. The trains have carried millions of travelers and have greatly reduced travel time from Beijing to Shanghai from 10 hours to five hours. China is also sharing this technology with many other countries. |
BEING an astronaut sounds cool, doesn't it? In space, they get to do some pretty amazing things, like floating in zero gravity(重力).
However, there are also plenty of things that astronauts can't do because of their weightless environment, and that's very sad. What's worse, they can't even let their sadness show, because it's impossible to cry in zero gravity.
Of course, astronauts can still produce tears. But crying is much more difficult in space, according to The Atlantic(大西洋月刊) in January. Without gravity, tears don't flow(流动) down out of the eyes like they do here on Earth. This means that when you cry in space, your tears have nowhere to go-they just stick(粘) to your eyes.
In May 2011, astronaut Andrew Feustel experienced this during one of his spacewalks. "Tears, " he said, "don't fall off of your eyes. . . They just kind of stay there. "
Besides making your vision(视线)unclear, this can also cause physical pain. Back on Earth, tears are supposed to bring comfort to the eyes. But that's not the case in space. The space environment dries out astronauts' eyes, and when tears suddenly wet the eyes, it can cause pain rather than comfort. "My right eye is stinging(刺痛) like crazy, " Feustel told his teammate during the walk.
Since gravity doesn't work in space, astronauts need some extra help to get rid of（除去） the tears. Feustel chose to rub his eyes against his helmet to wipe(擦) the tears away. Another choice is to just wait-"When the tears get big enough they simply break free of the eyes and float around, " astronaut Ron Parise told The Atlantic.
There are lots of small things-things like crying-that we are so used to on Earth. We usually take them for granted until they become a problem in a totally different environment, like space. There, astronauts can't talk to each other directly. They also can't eat or drink in normal ways. They can't even burp (打嗝), because there is no gravity to hold the food down in their stomach. If they do burp, they just end up throwing up（呕吐）everything in their stomach, according to the UK National Space Center.
Therefore, perhaps it's only space explorers who can honestly say: "Gravity, you're the best. "
It's getting colder outside, and you know what that means—it's time for flu season. Why do people get more colds, flu and now COVID-19 when it's very cold outside?
In a new study, scientists have found the answer. It turns out that the cold air itself damages（被坏）the immune response（免疫反应）in our noses.
The nose is an important part of our body's immune system. When a virus goes into the nose, the nose finds it, and the cells（细胞）there begin to create billions of simple copies of themselves called extracellular vesicles（EVs）.
"EVs can't divide like cells can, but they are like little mini versions of cells that can kill the viruses, " Benjamin Bleier, the author of the study from Harvard Medical School, told CBS News. "They are like little arms that grab on to the viruses as you breathe them in. " Then, the viruses sticking to EVs will be got out from our body in the form of snot （鼻涕）.
However, when cold weather hits, the nose's "superpower" becomes less powerful. The study found that when the temperature inside the nose drops by 5℃, nearly 50 percent of the billions of EVs will be taken out of the fight. "Cold air makes people catch viruses more easily because you have lost half of your immunity. " said Bleier.
This is why we should wear masks in winter. "Wearing masks can not only protect us from viruses, but it's also like wearing a sweater on our nose. " Bleier said. The warmer you keep your nose, the better it works to fight against viruses.
In the future, Bleier expects to see the development of medicine that build upon this new finding. "Scientists may find a way to fool the nose into thinking it has just seen a virus. " Bleier said.
Can you imagine an AI chatbot (聊天机器人) competing with you in an examination? Do you think you could get higher scores than it? A new AI chatbot called ChatGPT recently passed a law school exam! Sounds crazy?
ChatGPT was developed by US company Open AI. It's not only good at learning but also full of sense of humor.
You can ask it to write stories and emails, translate languages, and answer all kinds of questions. According to a US survey of more than 1000 students over 89 percent of them have used ChatGPT to help with homework.
For example, New York City public schools don't allow students and teachers to use ChatGPT on the district's networks and devices(设备).
The measure(措施) comes out of worries that the tool could make it easier for students to cheat on homework. "It does not develop thinking quality and problem solving skills, which are necessary for studying and lifelong success, " said Jenna Lyle. Apart from bans (禁令), teachers are making changes to their classes to prevent the use of ChatGPT. Some college teachers in the US try to include more speaking exams and handwritten papers instead of typed ones.
Some Canadian universities are making rules on its use, for both students and teachers. They have no plans to completely ban the tool so far. Some people said that bans on AI software like ChatGPT are not wise. "We have to know that AI is a tool people will use, " What we need to do is "change our learning, teaching and examinations". In that way we can "have integrity(诚信) while economizing the use of the tool".
A. It is a powerful tool. B. However, not all educators say "no" to ChatGPT. C. Some schools in the US do not allow students to use it. D. The use of ChatGPT has raised heated discussions in the education world. E. Some also worry that ChatGPT could be used to spread incorrect information. |
