a=b, b=c, so a=c. Pen "Fun" Pavilion www.biquge.info

Mathematically, this formula holds true.

However, the difference between mathematics and reality is that mathematics is purely rational, or purely objective, while reality is the collision between reason and emotion, and the dance of objectivity and subjectivity. In many cases, rationality will be overwhelmed by emotion, and objectivity will also be overturned by subjectivity, resulting in some phenomena such as "irrationality" and "countercurrent".

Exercise makes people healthy, and health makes people live longer.

Exercise makes people live longer.

Xu Guangling savored these two sentences in his heart.

If purely from the perspective of the answer, since Zhang Lao said this just now, there must be some differences in these two sentences. If it is an exam, and it is a multiple-choice question, even if he doesn't know why, Xu Guangling will probably still answer the question like this: The previous sentence is correct, and the latter sentence is not right, there is a problem.

But is there a problem? If so, what is the problem? Xu Guangling does not know.

In fact, compared with these two sentences, he is more familiar with the sentence "life lies in sports", and therefore, he tasted these three sentences back and forth in his mind, and did not find anything wrong, Xu Guangling said to Zhang Lao truthfully: "Zhang Lao, I don't feel that there is anything wrong with the sentence 'sports make people live longer', I think it is right." ”

Zhang Lao nodded in front of him, and then finally turned around for the first time and said to Xu Guangling: "Xiao Xu, look at the old man, how old do you think I am this year, old man?"

"Zhang Lao, you are as healthy as a pine, as calm as a bell, and your spirit is like a dragon, if you look at forty or fifty people, if you don't know you, I must guess that Zhang Lao is in your forties, but since you said yesterday that you are two generations higher than me, then you must be not only in your forties, but you should be in your fifties, I guess, you should be close to the age of sixties, but not yet, right?"

"Haha!

Hearing Xu Guangling's words, Zhang Lao was a little overjoyed for a while, and laughed for a while before he stretched out his hand and pointed at Xu Guangling and said: "Xiao Xu, Xiao Xu, I thought you were an honest child, but I didn't think that you were not honest at all! Even though I am really in good spirits, even if I am in good spirits, I will never be able to 'look at forty or fifty people'! You are just trying to make the old man happy, and you are talking nonsense with your eyes open." ”

Xu Guangling smiled and did not refute.

"However, 'the body is as strong as a pine, the breath is as heavy as a bell, and the spirit is like a dragon', this is really good, after the old man goes back, he will definitely find a big pen to write it down and hang it in the house, and every day just by looking at it, he can eat two more bowls of rice. ”

After saying this, Zhang Lao shook his head, turned around again, and walked slowly, "Stop talking about age, no matter whether you can guess it or not, the old man can't tell you." The age of the little girl is a secret, and so is the age of the old man. But what I want to tell you is that when the old man was young, he herded sheep for the landlord's family. ”

"With your old wisdom, you must be a good hand at herding sheep. Xu Guangling said.

"Not to mention, the old man really has a good herding of sheep, so the landlord's family is also very relieved to leave all the sheep to me to take care of. You may not know that the reproductive ability of sheep is very strong, an old sheep can bring two litters a year, a litter is less than two or three, more than four or five, so even if there is only one old sheep, a year has passed, it can become a dozen, or even dozens. ”

"The lamb is not like us, it is just born, it just comes out of the belly of the old sheep, and it can jump alive. ”

Zhang Lao said slowly while walking ahead.

"This is the survival skill of the animal kingdom, wild animals do not have such superior living conditions as we humans, so many kinds of small animals are born, can run and jump, only in this way can they survive. Sheep raised by humans have also left this characteristic of wild animals. Xu Guangling added later.

Saying this, Xu Guangling was actually a little sad in his heart.

Because this knowledge point is not known to him in the library, nor from the Internet, but from his father when he was young. ――In his spare time, Xu's father likes to watch the animal world.

"Daddy, the bison don't have hands, and when they're being chased by wolves, what if they have a calf that has just been born? Xu Guangling asked his father, in front of the TV, there was the entanglement and struggle between wolves and bison.

"That's why the calf is born to run!" Xu's father turned down the voice of the TV and explained in detail to Xu Guangling.

......

The sentimental mood was well contained, so Xu Guangling's tone was very calm and unusual. Not to mention that Zhang Lao was walking in front, even if he was face to face with Xu Guangling, it would never be possible to see anything.

"Not bad, Xiao Xu. Zhang Lao praised him very much in front of him, "You're right, that's it." But the old sheep and the little lamb, do you know what the biggest difference is between them?"

This Xu Guangling really doesn't know.

It is impossible for him to tell Zhang Lao that the biggest difference between an old sheep and a little sheep is that one is an old sheep and the other is a little sheep. - If you really say that, it is estimated that Zhang Lao's Taijiquan, which looks very calm and energetic, even if it is forcibly transformed, will be transformed into a bone palm, and give him a blow.

So Xu Guangling shook his head honestly, and said at the same time: "I don't know." ”

"Then let me tell you, Xiao Xu, the biggest difference between the old sheep and the little sheep is that the old sheep will be quieter, if you give it a pile of grass, or if it finds a source of grass, it will stand there and eat quietly. But the lamb is different, the lamb will be very jumpy, very naughty, as I said earlier, lively, they are always going back and forth. ”

"It's not just lambs that have this trait, calves too, puppies, or our human children. When they are full of food and sleep, they will always become very fluttering and unable to calm down. Zhang Lao paused here before continuing: "So, they are also growing very fast, almost at a speed that we can completely see, and they are growing rapidly. ”

At this point, Zhang Lao's tone became a little meaningful: "Xiao Xu, do you know, there is an old saying in the ancient book, called 'The pioneer, Xie Duzao.'" ’”

"Those who have been in the bush for a long time, fly high, the pioneer, thank you for being early. The first half of this sentence originated from Mozi of the pre-Qin Dynasty, and was later supplemented in the Ming Dynasty aphorisms Caigen Tan. Xu Guangling added a note to Zhang Lao's words, or "praise".

"That's right, Xiao Xu, you're really good!" Zhang Lao even turned around and gave Xu Guangling a thumbs up, and then turned around again and continued to walk slowly: "A few years ago, Western scientists' research reported that our human genes and mouse genes are as much as 99% similar! This is also the reason why many pharmaceutical developments use mice for experiments, and the results obtained in mice can basically be applied to humans. ”

When Zhang Lao said this, he stopped again, turned around, and faced Xu Guangling, his eyes were blazing: "The life span of our human beings is sixty or seventy years, eighty or ninety years, and there are not a few who live to be a hundred miles away. ”

"Xiao Xu, do you know what the lifespan of a mouse is?"

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