Chapter 229 (2/2)
Shi Yang couldn't see it, so he took a picture: ”brother, don't look, it's too late.”
The man did not move.
Wait and see, a invigilator who looks like sun Xiubin also feels that something is wrong. He walks over quickly.
In the middle of the journey, the hairy monster suddenly raised his head, glared and took a breath.
Then, staring at the spot and gasping.
People around were startled.
Invigilator teacher, ”low configuration version of sun Xiubin” were scared to stop: ”students, need help?”
”No It's ok... ” The fury gasped and shook his head.
This voice is tender and weak, in fact, it is not quite like a boy's.
Li Zheng also saw at this time that he was not even a boy. He was too white and delicate, his face was thin, but his eyes were big and watery, and his eyes were full of innocence.
Not only like a girl, but also like a child
As expected, he is a man who does not know the height of heaven and earth.
The opposite Shi Yang also looked for a long time, looked at looked at shyness.
He was not afraid to deal with boys, but he was flustered when he saw such a beautiful and young boy.
At this time, ”sun Xiubin” has come to the long hair monster in front of concern asked: ”really OK? You don't look very well
”Ah It should be... ” Long hair monster eloquence is also OK, quickly wiped his mouth, gradually incoherent, ”even if Are you ok Well It should be... ”
Li Zheng knows a lot about this kind of shyness and transient aphasia.
”Did you fall asleep and have a nightmare?” Li Zheng asked with a smile.
”Ah Yes, I had a nightmare... ” The long haired monster quickly responded, looked at Li Zheng gratefully, then grabbed the book, held the table and said, ”I've been sleeping too long Is it time to hand in the books? ”
People around him laughed, but there was no malice.
It's amazing that such a big man can enter the second round.”Ah...” ”Sun Xiubin” helplessly pointed to the cabinet in the back of the classroom, ”put all the things irrelevant to the exam there.”
”Well, I'm sorry, teacher...”
”Sun Xiubin” said solemnly, ”don't be sorry for me. It's not my examination. I hope you can correct your attitude and be worthy of yourself.”
“……” The red face of the long haired monster turned around and just caught sight of Li Zheng's smiling face. He also spat out his tongue and laughed. Then he quickly slipped to the back of the classroom.
”Sun Xiubin” had no choice but to shake his head, and then went back to the blackboard and wrote down the notes and time arrangement of the examination one by one on the blackboard.
The long hair monster quickly came back and sat down steadily. After the disaster, he wiped his sweat, blocked his face and whispered to Li Zheng: ”thank you.”
”Not really.” Li Zheng waved his hand and laughed.
Unexpectedly, the hairy monster is still very good to deal with.
It's a little too casual. I can't read the basic textbooks. I don't have a calculator. I doze off.
However, on the contrary, it is also a talented person to be able to enter the second round at will.
Li Zheng then picked up the calculator and shook it: ”the amount of calculation in the second round is large, so you should take a calculator with you.”
”Ah, is it?”
”Well, it saves a lot of time.” Li Zhengchong podium Nuozu mouth, ”if you're sorry, I'll raise your hand to say that each examination room should have several spare calculators to provide.”
The long haired monster waved his hands, and his face turned red again: ”it's OK, it's ok You don't have to... ”
”Exams are very important. You are so shy.” Li Zheng then leaned over and handed over his calculator. ”You use mine. I'll take it.”
”No ”I don't need to That's enough for me
”Ha?” Li Zheng is neither laughing nor crying, ”this is the second round of material competition, mental calculation?”
”It's OK. I'm quick.” The hairy monster scratched his head, pushed Li Zheng's hand and said, ”thank you.”
”Ah.” Li Zheng also had to shake his head and take back the calculator, ”look at you, should be a senior one? It doesn't matter if we fail this time. We should learn a lesson and prepare well next year. ”
Long hair strange smell speech to stay for a moment, and then cover his face a smile, silly nod: ”good, good, know.”
”Shit...” But Li Zheng was very uncomfortable. ”Can't you just end up with” La ”
”What's the matter?” he asked
”Forget it Just be happy... ”
”That's fine.” The fur monster laughed again.
”That's enough...”
”Sun Xiubin” voice suddenly came: ”you two haven't talked enough?”
They quickly shut up.
Sun Xiubin then lit the blackboard and said: ”last but again, the examination time is from 9:00 to 12:00, with a total score of 320 points. When the bell rings at the end, anyone who writes another word will be punished as violating the rules.”
All of them were staring at each other and did not dare to speak.
After all the arrangements are finished, the bell rings and the examination papers are issued.
Li Zheng has been on the battlefield for a long time. After getting the paper, he no longer has the feeling of surging before.
All over the body, there is only one word -
steady.
You don't have to think about grades or something.
If possible, try not to think about Lin Yujing's question answering situation. This is very difficult and can only be done as far as possible.
Just like the usual questions, one by one, just like water.
Li Zheng went to the first question.
It is worthy of the second round, and the difficulty of the first question is up.
In a station wagon, there is a small round table.
There are three rods at the bottom of the small round table as support, like a camera tripod.
And now in the middle of the table, there's a cup of tea.
Ask to make tea as much as possible, and stable, the best should be installed how high.
This is a very common process in life, and it is almost enough.
But if we discuss it from the physical point of view, it will be a long and complicated calculation process.
In the simplest words, it is to make the center of gravity of the water cup as low as possible.
After setting this goal.
This problem has nothing to do with physics.
It turns to analytic geometry and calculus.
One more limit.
Let's combine the equations.
Remove the negative solution.
Well, can't this answer come out if you want to calculate it?
H = m ρ π 2 [{(1 + 4 π 5 · ρ r? HM) ^ 12} - 1]
it's simple and clear, there's no calculation, it's just a hot hand.
The second problem is the little man cart.
It's just that this time it's an agricultural flatbed truck with two wheels, two poles and a big flat plate.
That is, calculus and other things are needed to calculate.
There are also some simple problems of moment, rigid body mechanics and energy conservation.Just a little more attention to a bunch of two-dimensional collisions.
After you've pulled these apart.
What is left in front of me is still a mathematical geometry problem.
It is indeed a calculus competition for middle school students.
After Li Zheng wrote down the answer, he looked at the table next to him.
Long hair monster is staring at the paper in a daze, two eyes Leng lovely.
Well, you are still too young.
Come back home and learn calculus.
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