Before returning to the college entrance examination, I became popular in the science circle

Chapter 1 Adventure
The scorching sun of summer is shining in the sky, and the afternoon sky is full of restless heat, even the cicadas have no strength to sing.Wu Tong was sitting in front of the desk, the air conditioner was already turned on to 25 degrees, and the cold air was blowing out and circulating in the room, she still felt irritable.

It is known that the complete set U=R, the set M={x∈Z|-1≤X-1≤2}, the relationship Venn diagram of N={x|x=2k, k∈Z} is shown in the figure, then the figure The shaded part in shows how many elements are there in the set?
How many are there?

Wu Tong really didn't know how she, a 28-year-old migrant worker who had been out of the classroom for ten years, could remember the high school questions.

Frowning, Wu Tong rubbed the center of her brows in frustration. Who would have thought that she would return to the summer vacation of the first year of high school after waking up from a coma, and become a willful, ignorant, unmotivated student.

Her head hurt, but the image of her father passing away in a car accident and her mother's life and death in the emergency room appeared in her mind.

It was as if his heart was being pulled... The piercing pain made Wu Tong unable to breathe.

The pen in his hand snapped off on the desk, and Wu Tong looked at the test paper in front of him.

Everything is too late.

It is only 09 now, she is only 16 years old, and she is still before the college entrance examination!

Wu Tong tried her best to concentrate, and even thought unrealistically, if there was something that could make her concentrate and concentrate, it would be great!

I was just about to complain that my mind was not focused, and I started dreaming before I fell asleep!

Suddenly, a feeling of coolness and tranquility slowly faded from the depths of his mind, making Wu Tong instantly feel like an ice watermelon in a dog's day, extraordinarily light and spirited.

In just a short while, the problem that had troubled Wu Tong just now was vaguely grasped from her limited knowledge base, and she had some ideas. It seemed that she could start with the intersection operation of M and N sets.

This is, pie in the sky?
Or, her delusion?
If it was an illusion, the problem-solving ideas that emerged in her mind were not false. This was a knowledge point that she would never remember now. The teacher had taught it at that time, but she had not listened carefully back then.

At this moment, she has no distractions, and the knowledge points that she once had heard have been dug out, and connected from point to surface to form a way to solve the problem.

To describe it in one sentence, this is called the spark of inspiration.

If possible, Wu Tong certainly hopes that this is real and not a one-time existence.

In order to prove it, Wu Tong calmly examined the question again, and the spirit of blessing appeared again, and all the miscellaneous thoughts in his mind subsided, leaving only the serious question-solving that focused on getting to the bottom of the question, and started writing along the line of thought just now.

The set shown in the shaded part of the figure is MnN...
∵M={x∈R|-1≤x-1≤2}={x∈R|-1≤x≤3}，且N={x|x=2k，k∈Z}，

∴M∩N={0, 2}
Therefore, there are 2 elements in the set shown in the shaded part.

After writing down the whole thing smoothly, the answer was born in the pen. Wu Tong really experienced the joy of doing the questions.

If learning is so comfortable, learning all the time is a joyful enjoyment, not a torment of anxiety!
How many people's longing for such a wonderful pen!
The sudden adventure made Wu Tong very pleasantly surprised, and at the same time curious, where did this chance come from?Recalling that the original source of that miraculous feeling came from the depths of his mind, Wu Tong couldn't help closing his eyes and calming down, focusing his thoughts on feeling deep in his mind.

Her heart calmed down inch by inch. Suddenly, Wu Tong only felt that her own consciousness came to a magical place, her thoughts were clear, and a burst of enlightenment came to her heart. This is the deepest part of her sea of ​​consciousness. Among them, a The slightly incomplete black jade tablet stands quietly, even if the body is incomplete, the jade tablet is still radiant, moist and crystal clear.

Wu Tong's consciousness tentatively approached the jade stele, and she was enveloped by the calm and mountain-like aura of the jade stele. A warm current flowed quietly into her heart, and all the consequences naturally emerged in Wu Tong's mind.

There is a strange thing in heaven and earth called the Enlightenment Stone. It is a natural monument and has the miraculous effect of comprehending the principles of heaven and earth.It’s just that time has passed and the years have changed. Today, the broken Enlightenment Stone has only the weak ability of Ning Xin to concentrate on assisting thinking operations and deductions, and it is on the verge of extinction.

Today, being activated by the intertwining energy of time and space, Wu Tong, as the owner, accidentally awakened his past life memories, blended with the future, and got a glimpse of a hint of the future.

But for Wu Tong, these minor abilities are already extremely useful aids to her. Being able to obtain these is already her blessing. She is not greedy to reach heaven in one step and become an immortal or a Buddha.

All the tragedies stemmed from the fact that she deliberately didn't study hard after this summer vacation, but now with the alarm bell of past life memories and the assistance of the stele of enlightenment, the first step to change her destiny, she can only study hard.

Learn step by step, master more knowledge, become the pride of your parents, become a useful person, and be able to control your own life.This is the most satisfying path for her parents and the best path for her development.

In her previous life, she was tired of repetitive work and had no real understanding of the world. Although she knew that technology would develop rapidly in the future, she did not understand the principles behind it. She knew that housing prices in big cities would get higher and higher, but now she and her family I don’t have the capital to buy a house in a big city.

Knowing that someone will win the lottery, no matter how many tens or hundreds of millions, her memory does not include the lottery numbers...
Her family is just like most people in the world. She lives in a small county in Xincheng County, Tianzhong City, Central Plains. Her father, Wu Jingzhong, is a civil servant and works in the county agriculture bureau. Her mother, Jin Yu, is a primary school teacher and works in the county primary school. Teach math.The family is not rich, but the basic life can still be guaranteed.

She doesn't pursue extravagance, and the economy is not too difficult, so she doesn't need to turn the tide and go out to make money immediately.

There is a room of gold in the book. If you study hard, you can also make money.

In her previous life, she seemed to have heard that a mathematician solved a mathematical conjecture and was rewarded 100 million.

She doesn't know where her limit is, but in terms of personality, a job that is not good at communication and specializes in research is the most suitable for her.What's more, she now has the assistance of the Enlightenment Stone, maybe she can also rush to such a glory!

And studying hard, learning knowledge, and comprehending knowledge can also become the nutrient of the Enlightenment Stone, nourishing and repairing the Enlightenment Stone. This is their complementarity and mutual perfection.

In addition to its source, the Enlightenment Stone also gave Wu Tong a physical strengthening technique. Wu Tong named it the Chaoyang Purple Qi Technique. Using herself as the medium, she ingested the morning glow purple qi from the rising sun every day and combined it with special breathing to enter. The whole body, limbs and bones can nourish every part of her body. Although it does not have the miraculous effect of changing the destiny at every turn, it can strengthen the muscles and bones, enhance the physique, and avoid serious illnesses.

It's a pity that inhaling Zhaoxia Ziqi is only suitable for her own use. This is deduced on the basis of the co-existence of the Enlightenment Stele and her.But that set of breathing methods, which she researched and simplified, can be handed over to her parents, and combined with soothing exercises to strengthen her body.With a better physique and less trouble from natural diseases, they must at least work hard to live a hundred years or more without disease.

(End of this chapter)