Chapter 14

Police station, communication room.

The police and Song Yu have big eyes to small eyes.

The policeman held a pen, half smiling: "how is it you again?"

Song Yu slowly replied: "probably because I am born with a strong sense of responsibility, I like to call the police when I encounter unfair things."

The policeman was happy: "no, what I asked was that you were always beaten up."

Song Yu said:

Xie Sui laughed beside him.

The gangsters actually suffered more injuries than they did, but Hongmao had a record in the police station and had numerous criminal records. The police considered them to be in self-defense. They simply recorded it and let them go. Originally, he wanted to contact his parents. Song Yu took the initiative to tell Xie Sui's family situation. His words were emotional and reasonable, so he canceled this link.

It's the same police station and the same small clinic.

There were a few people in the clinic and the lights were bright.

The male doctors in the clinic still have an impression of them.

Doctor: "last time it was a leg injury, this time it was a hand injury. You're wild, young man

Xie Sui sat on the chair, his eyes bent slightly, and said modestly with a smile: "it's OK."

The doctor was so angry that he almost broke the pen on the paper: "I said you were wild. Are you proud? You are showing off your prestige outside. How do you worry about your family? Have you ever thought about it? When you are young, you should give me a place to study, and you have to follow the group of young people who don't do their jobs. If something happens, it's your parents who are sad. "

Song Yu, with his mints, spoke for Xie Sui: "uncle, you misunderstood me. You can't just look at the surface."

The doctor gave him a blank look: "I haven't trained you yet. You boy is his friend, so you watch him fight there? Not to persuade? "

Song Yu choked, a little embarrassed on his face and scratched his head: "what we said is not the same thing."

The doctor put the medicine into the bag and sneered, "yes. It doesn't look at the surface, are you the scars left by fighting aliens? Aliens also use cold weapons like that

Song Yu said:

On the wall of the TV is Degas Altman. The doctor's two-year-old son listened, clapped his hands and turned his head. His big clear eyes were bent up and he was smiling with milk: "crooked star silver."

Xie Sui paid the money and took the medicine. "Thank you."

Doctors hate that iron is not steel: "my son will grow up in the future. If I hurt myself like you all day, I'll break his leg first. "

Song Yu chewed the sugar and yelled: "I said we can't look at the surface. What's the matter with you, uncle. My friend was hurt by getting rid of the tyranny. He just fought against the street bully with a hundred enemies. It has protected the personal safety and property safety of all junior high school students in Lianyun street. These are the scars of heroes. "

Doctor:

The child sitting in the chair drooled and clapped: "hero."

Song Yule said, "ah, children are so smart. Say it again."

The children who were praised laughed sweetly and said, "brother, hero."

Seeing that he had taught his children badly, the doctor was so angry that he drove them away with a feather duster: "walk around and fight against street bullies. I think you are the biggest bully in Lianyun street."

"Pooh ha ha ha."

Song Yu, who was promoted to be a street bully, couldn't laugh, so he took Xie Sui out.

A street lamp outside the clinic gathered a few moths. On a quiet summer night, insects whispered from the bush.

It's very late now. Song Yu stands under the street lamp and calls uncle Ma to pick him up at his old place.

After hanging up the phone, Song Yu turned to Xie Sui and said, "I won't come much since then. I'll see you at the beginning of summer vacation."

Those gangsters have criminal record. This time they will have to stay in the Bureau for several days. Xie Sui should be safe in July and August.

Solved the most dangerous thing he would encounter during the summer vacation.

Song Yu felt that there was no need to run here again.

Xie Sui's breath is still the smell of mint.

I can't help but wonder how much Song Yu likes mint.

A finger closed, smile: "en, see you at the beginning of school."

Song Yu stares at him and thinks of the fierce fighting teenager in the deep lane, and his words stop for a moment.

He felt that he did not know Xie Sui for a moment, but it seemed that he had never really understood Xie Sui.

Take the bus, leave the remote residential area and go to the downtown area.

The neon lights shine brightly on the Song Yu ruo's face.

Uncle Ma asked, "young master, you still come to see your friend who is like a friend at first sight?"

Song Yu recalled: "yes."

Uncle Ma said: "you run every day. The old lady is suspicious. I think if you come a few more times, she will meet your classmate. "

Song Yu laughed: "no, no more."

In fact, it's nothing for grandma Meng to see Xie Sui.

However, he promised 008 that he could not appear with Xie Sui as the third young master of the Song family. Later, he planned to make up an identity of "a distant poor relative of the Meng family". It was easy to reveal his true feelings when he met grandma Meng.Song Yu's QQ plus very few people, he lying in bed playing mobile phone, looking at the full stop Jun that black head, inexplicably a little itchy, want to send something.

But today, I tried my best to make a bad comment. I ran a street in the middle of the night. I'm tired of mental and physical exertion.

I don't know when I went to sleep.

It was nine o'clock the next morning.

Go downstairs for breakfast, Song Yu receives Ma Xiaoding's bombardment.

[Zhenzi doesn't forget to dig a well: poo ha ha ha ha ha ha ha ha ha ha]

[Zhen Zi does not forget to dig a well: is it you that crazy bad judge of brother Yu? I went to his place to have a meal on purpose today. I saw Zhu Zhixing's mother's face black and blue, I think I'm going to die of anger. ]

[Zhenzi never forgets to dig a well: ha ha ha ha, it's so talented. I also asked my younger brothers to follow your steps and brush several. Angry to death this vicious woman! ]

Song Yu was too lazy to care about Zhu Zhixing. When he thought of grandma Meng's expectant eyes and a stack of papers on the table, he felt a headache.

He drank the milk and sent a message to Ma Xiaoding.

Brother Yu: how are your grades? ]

[Zhenzi never forgets to dig a well:??? ]

[Zhenzi never forgets to dig a well: Why did you ask me about this? It's ok Yes. ]

if you can be admitted to Jingcheng No.1 middle school, the result is not poor.

Song Yu hooked his lower lip and began typing.

[brother Yu, your husband: good grades in junior high school, not necessarily in high school. Don't think you can relax in the summer vacation when the high school entrance examination is over. Others are crazy about enrolling in cram schools. No. 1 middle school has a lot of competition pressure. Every year, it's lucky that it hasn't been sealed down by the government. Senior one can't lose at the starting line. ]

MA Xiaoding was shocked by his father's speech.

[Zhenzi never forgets to dig a well What do you want to say, brother Yu. ]

Song Yu has gone back to his room, opened his chair, sat down at the table and looked at the mountains of papers.

[brother Yu, your husband: come here and I'll give you some knowledge. Good brother, make the paper together. ]

[Zhenzi never forgets to dig a well ]

can we not be a good brother.

Half of the paper was given to Ma Xiaoding. Song Yu was much more comfortable.

His grandmother Meng gave him a lot of information, at the beginning of the transition period, many of them are consolidation review of junior high school, and a little bit more penetration of high school knowledge. There is even the original question of the college entrance examination, just to let him have a grasp of the difficulty.

In addition to the first paper, Song Yu was totally unprepared for the first paper, and slowly found a little feeling behind.

It is very difficult to pull a paper at the bottom of a book. It is not required to do it. Song Yuxian's free turn to the last question, stunned.

A very classical function problem, e x power and E times X.

He did not intend to try the final question, but he felt vaguely familiar, and even a very vague concept appeared in his head. After thinking about it for a long time, I finally remembered it.

This is a typical example of Lagrange's mean value theorem!

He will still remember this problem, which is probably the name of the theorem mentioned by high school teachers when expanding the thinking of solving problems.

Baidu on the theorem, not combined with specific examples, is very difficult to understand. Song Yugang wanted to finish the first conversation with Xie Sui.

So I took a picture of this question and sent him a message.

For the disgrace of the original A66, he thought about it.

In a pretentious way.

Do you know what Lagrange's mean value theorem is? ]

Xie suizheng was lying on the bed with his fingers tapping on the computer, invading the Linshui intranet and calling out the monitoring records.

After finishing everything, I went to pick up the water cup nearby, and I caught a glimpse of the information on the mobile phone.

[Song Yu: do you know what Lagrange's mean value theorem is? ]

Xie Sui:

He should be glad he didn't drink water.

As a student, Xie Sui was outstanding all the time. He was lonely and indifferent, and had no contact with any normal students.

Therefore, we can't understand the brain circuit of Song Yu which relies on perseverance to solve problems.

Why do you ask Lagrange if you have to count your permutations and combinations?

Of course, Xie Sui didn't say anything about this self-esteem problem. Because he can see that Song Yu's enthusiasm for learning seems to be very high, he does not want to hit him.

Xie Sui took out a pen and a piece of paper, took care of Song Yu's knowledge reserve, wrote down the standard solution of the problem in detail, and took photos to send it.

[Xie Sui: [picture]]

[Xie Sui: I don't need that. ]

after waiting for a long time, Song Yu also attached a photo with clear thinking and beautiful handwriting.

It's even easier to understand than the answer.

Cattle criticism, worthy of being the protagonist, is the favored son of heaven.

But when Song Yu got to the top of a bull's horn, he would persevere and continue to ask.Song Yu: how do you use that? ]

by the way, I sent out some expression bags.

[scratching head question mark]

[[ball ball you]]

Xie Sui's finger on the small scratched soybean made him feel as if he saw Song Yu's mobile phone trouble. His expression was a little distracted, and then his lips curled.

[Xie Sui: so you want to know? ]Song Yu: Yes. ]

[Xie Sui: cross out the large paragraph from the third line to the fifth line and change it into "known by Lagrange mean value theorem". ]

“？？？”

After Song Yu did it according to his view, he expressed the feeling of "learning dregs".

[Song Yu: there is a number in the interval to make them equal. ]

Xie suidu didn't want to tell him that it was a theorem. After thinking for a while, his eyelashes fell down and his dark pupil was smiling with a little evil taste.

[Xie Sui: didn't it give you an interval? You can go one by one, and you can always find that number of people

Song Yu said:

Your mother's range is infinite!

Why does he always feel that Xie Sui is laughing at him.