The set questions are much simpler. They test the understanding and basic definition of sets, plus some questions of normal difficulty.
After Yu Hua watched Yile, it was not difficult, and even found it easy.
Continuing to look down, the geometry types are composed of solids and planes. Starting with the plane, the difficulty gradually increases. At the level of solid geometry, the difficulty of the questions is approximately equal to the range from the third year of junior high school to the first year of high school.
Still not difficult.
As for the simplest trigonometric function type questions in high school mathematics, this is one of the few items that Yu Hua is good at. After a rough reading, it is basically the same as the content of modern Chinese high school mathematics, including power reduction formula, double angle conversion, induction formula, sine theorem,
Cosine formula and so on.
After flipping through the mathematics textbook, Yu Hua was surprised to find that the difficulty of this thing is really not high. In the future, even though he is a scumbag in mathematics, he can actually understand even slightly complicated questions with just a little thought. p>
Darling, is this the power of modern education question-based tactics?
Even I, who is a scumbag in mathematics, can crush high school students of this era in terms of mathematics level.
To be honest, compared with the various mathematical problems that tortured the nerves and brains in later generations, the current high school mathematics level in the Republic of China has temporarily stayed at the ordinary level. The difficulty is only one-third of that in later generations. It is really not difficult.
Although reducing the difficulty of mathematics subjects is meaningless for science, it at least improves the chances of getting admitted to National Tsinghua University.
I have to say, this is a little surprise.
After briefly flipping through the textbook and browsing the general content and table of contents, Yu Hua fully understood the situation without any arrogance in his heart. He went back to the beginning again, turned to the first chapter of Mathematics, and started reading from the most basic part. A journey of a thousand miles begins with a single step.
Now, lay the foundation.
Holding a mathematics textbook published in 1934, Yu Hua, as a math scumbag, originally had a headache for mathematics based on abstract logic. He would doze off every time he held it, but for some reason, he was able to read it with peace of mind.
The brain responds quickly and the memory effect is excellent. When encountering doubts and puzzles, the content taught by future high school mathematics teachers can appear in the mind, and the formulas can be combined to find clues to solve the problem.
Gradually, Yu Hua entered a state of selflessness, with a high concentration of energy. He could not see anything around him, and there was no sound in his ears. Only he and the book were left.
I finished reading the first chapter of collections quickly, the second chapter of functions is easy to understand, and the third chapter of algebra is simple...
Immersed in it, Yu Hua kept solving problems. The more he watched, the more interesting he became. The more he watched, the more he understood the mystery. For the first time, he felt that solving mathematical problems can make people happy instead of painful.
As time passed, light snow gradually began to fall in the sky.
"Boom - boom, boom, boom!" I don't know how much time passed, but at this time, in Jinguo Hutong, a loud and distant metal knocking sound came out, one slow and three fast.
The sound comes from the gong, indicating that it is the time of the child.
After striking the gong four times, the watchman slowly left in the wind and snow.
"I actually read the book for so long."
Hearing the sound of the gong, Yu Hua, who was in a state of selflessness, suddenly woke up, feeling tired in his head. He looked at the notebook on the table that was densely filled with handwriting on the problem calculation content, and then looked at the textbook content.
I lifted my watch, feeling a little surprised and surprised.
The time is 12:30, and without realizing it, more than four hours have passed.
This is weird, what’s going on?
I, a little scumbag, actually read mathematics for so long at once. The key is, I still read it with gusto.
In the past eighteen years, Yu Hua had never studied mathematics for more than an hour, which was only fifty minutes at most. When he went to high school, he would get dizzy after studying for twenty or thirty minutes. He couldn't understand what the mathematics teacher was saying. He looked down at it.
Mathematics books, big eyes and small eyes, no one knows anyone.
Now I have been chewing for more than four hours at a time, and I am chewing with gusto, which makes Yu Hua feel extremely surprised. Is the soul of a top student that has been hidden in my body for eighteen years about to awaken?
Lower your head and look again.
Looking at the book, Yu Hua frowned slightly, suddenly feeling that the knowledge points were obscure, abstract and boring, and the knowledge that was not difficult became difficult at this moment, and he tried to find his previous state.
One minute.
Two minutes.
Five minutes.
Ten minutes.
"Hey..."
Facing the arithmetic book that was like a heavenly book, Yu Hua, who had been unable to get into the state, sighed and gave up.
Sure enough, a scumbag is a scumbag, and he has the soul of a top student with a hammer.
"Maybe it's because he's been watching it for too long, or maybe it's because of his predecessor. He prefers to read mathematics. He should have some talent in this area, and I've benefited from it."
Yu Hua sighed, rubbed his somewhat swollen temples with his hands, and thought about the reason. He felt that his head was dizzy and his body was still a little cold. He knew that this was a warning from his body: "Huh, I will only see this here today. Tomorrow
Continue."
Don’t force it anymore, learn to be efficient and need to combine work and rest.
I have been studying since time travel, so it’s time to rest.
Close the book gently and put it away.
After turning off the expensive light, Yu Hua, who was exhausted, took a plastic basin, a toothbrush and toothpaste, poured some hot water, washed up, and lay down comfortably on the bed.
As soon as his body touched the bed, he could not help but let out comfortable moans from all parts of his body. He relaxed to the maximum extent. Yu Hua covered himself with a quilt and fell asleep quickly.
……
This is a gray and dead world, surrounded by ruins and collapsed buildings. Not far away, there is a spectacular gatehouse that is dilapidated and looks like it has been bombarded by artillery shells. There are three large characters on the top - Presidential Palace.
In the haze, Yu Hua felt that he was under the gate of the Presidential Palace, surrounded by dead silence, lifeless, gray, decayed, and dead.
This is?
Just when Yu Hua was confused, suddenly, a hand full of blood placed on Yu Hua's shoulder.
Yu Hua was startled and turned around suddenly. A Kuomintang soldier wearing a German-made steel helmet with blood on his face came into view. He was carrying a medium-sized rifle, his chest was full of bullet holes, and his clothes were in tatters. He looked at Yu Hua with his eyes.
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"I believe you." After a second, the Kuomintang soldier's eyes showed a touch of color, which was trust and hope, and he said softly towards Yu Hua.
"What do you believe in me?" Yu Hua was a little confused.
The KMT soldier with blood on his face smiled: "I believe you."
"I believe you." At this moment, another slender and white hand suddenly placed on Yu Hua's shoulder. He turned around and saw a girl wearing a blue girl's dress. She had a beautiful face but a heavy chest.
There was a sharp blade, she showed a graceful and elegant smile, and spoke softly.
Then, a small hand held Yu Hua's right hand, and when he looked down, there stood a girl covered in blood. She looked up at Yu Hua, her big eyes showing longing and hope: "I believe in you." p>
The voice is crisp and full of childishness.
"I believe you..."
Different arms touched Yu Hua's shoulders, and more and more people appeared covered in blood and wounds. There were Kuomintang soldiers who had been shot in the chest, Red Party soldiers wearing straw sandals, and young and beautiful adult women.
There are simple rural women and there are strong rural men.
The number of people is increasing, and as far as the eye can see, it is densely packed and endless.
Everyone had smiles on their faces, staring at Yu Hua, saying this softly but firmly. The scene that should have been weird and terrifying made Yu Hua want to cry.
I believe you.
I believe you.
I believe you.
These are calls and expectations.
Yu Hua fell into silence. He stood there blankly, looking at the blood-stained Kuomintang soldiers, the graceful girls from the Republic of China, the immature girls, and the crowd gradually appearing behind him. He suddenly understood, understood.
What is the 'belief' they say? The corners of their eyes are red and sparkling.
These are the people who died during the Anti-Japanese War.
"I will not betray your trust, absolutely not." Tears welled up in his eyes. Yu Hua, who already knew what he should do, tried to control his emotions and said firmly and solemnly.
"I believe you." As if hearing Yu Hua's answer, the young girl nodded slightly, and the smile on her face seemed to be even brighter.
Trust.
This is the trust from our compatriots, the trust from 30 million people.
After the words fell, with a smile, the figure of the young girl gradually disappeared, the KMT soldiers and the little girl with blood on their faces, and countless people around them disappeared, leaving behind only the ruins of the gate tower of the Presidential Palace, and everything returned to its original state. p>
After a while, the whole world gradually disappeared and disappeared.
In the outside world, Yu Hua, who was lying on the bed and sleeping soundly, felt that he had had an extremely real dream. Tears flowed out of the corners of his eyes, sliding over his skin and flowing to the sheets. His whole body felt hot and hot, and he couldn't help but kick away the quilt. p>
……
The next day.
New Year's Eve has passed, the first day of the first lunar month.
A ray of sunshine breaks through the clouds, driving away the gloom of many days.
Today is a rare good weather.
With the new year and new atmosphere, the city of Peiping is filled with joy. People take to the streets to say hello to each other and hope that the new year will be a good one and they can live a stable life.
The city is already bustling with businessmen wearing hats and walking through the streets with their baggage under their arms. People are shouting and hawking shopping and breakfast.
In Chongwen's house, Yu Hua caught a cold.
"Ah...embarrassing!"
He sneezed hard, and a lot of saliva flew everywhere. Yu Hua, who was sitting by the bed, had a runny nose. He wiped the turbid liquid with his hand, then picked up the kettle and poured half a bowl of ginger soup into the porcelain bowl on the bedside table.
, take a sip to drive away cold and generate heat.
I don’t know if it was because of the wind blowing last night, the temperature was too low, or because he kicked off his bedclothes. When Yu Hua woke up this morning, he felt light-headed and uncomfortable all over. His nose was red, swollen and runny, typical symptoms of a cold and fever.
Today's plan to study mathematics has come to nothing.
Yu Hua felt dizzy and had no desire to read. He touched his forehead and felt a burning sensation. The touch temperature was about thirty-nine.
This temperature is not much different from burning the brain.
"There is no rush to study today. Let's cure the cold first to avoid aggravating the condition. We will go to the pharmacy to get some medicine and then find a way to exchange French currency for oceans." After drinking the ginger soup, he put down his rice bowl, a sense of warmth emerged, and Yu Hua felt comfortable.
After a while, I realized my condition and had to temporarily give up my study plan and prioritize dealing with my condition.