"This is the expectation and variance of the Poisson distribution, from which we can find" Feng Fei gently pushed open the back door of the public classroom, walked in lightly, sat in the back row, looked at the time, and the class was out in half an hour.
There were two girls sitting in the back row of the classroom, the two girls heard the slight sound of tables and chairs, turned their heads sideways, and found Feng Fei, Feng Fei hurriedly made a "shhhh ” The girls naturally had no objections, and they discussed in a whisper for a while, looking at Feng Fei from time to time.
Feng Fei put down his schoolbag, wrapped the headphone cable and put it in the side pocket, looked up at the front, and found that he was talking about high numbers, it just so happened that he was also in high numbers this morning, and he still had books in his schoolbag, he took out the books, spread them out like that, and also turned to the section of Poisson distribution, and then took out his mobile phone.
The two girls sitting next to Feng Fei quietly discussed for a long time, and the long-haired girl who was close to Feng Fei blushed a little, and asked Feng Fei softly: "Classmate, I feel that you are a little familiar." ” Feng Fei was stunned for a moment and said with a smile: "Yes." ” The long-haired girl nodded and whispered, "I've seen you several times, last time in Ma Si's class, last time in mechanics class." ” Feng Fei himself couldn't remember it so clearly, he smiled: "Well, I sometimes come to listen to lectures." ” "But I don't quite remember which class you are in, are you from the math department" The long-haired girl hesitantly looked at the short-haired girl next to her, and hesitated, "She said you are not from our side" "Oh, no."
Feng Fei smiled and reported his school and department, "I'm here to skip classes." ” The short-haired girl who was far away from Feng Fei pushed the long-haired girl next to her, and whispered: "Look at it, look at it, I'll just say he's not, he seems to be called Feng Fei, he just entered the school this year, it's their department's grass, when he joined the E-sports Association, my classmates also took a photo of him, I saw it in her circle of friends, hey, I'll find it for you to see."
The short-haired girl said and took the mobile phone, and the long-haired girl lowered her voice and said, "You be quiet" Even so, I couldn't help but poke my head out to look.
Feng Fei's ears were sharp, and the whispers of the two girls entered his ears, but he was talked about a lot like this since he was a child, and he didn't feel anything, so he sent messages on his own.
The long-haired girl looked at the photo in the short-haired girl's mobile phone, compared it with Feng Fei, and confirmed that this was the grass of the college next door, a little excited, she coughed lightly, and said shyly to Feng Fei: "Classmate, if you like to listen to our teacher's class, I can give you a class schedule for our class, you can come to any subject you want to listen to." ” Feng Fei sent a message, turned his head sideways and smiled at the long-haired girl: "Thank you, but I already have your class schedule." ” The long-haired girl sneered, she turned her head to look at the girl next to her, thought about it and said, "You always come here to listen to the class, it's very tiring, it's not too close to your school." ” "Okay."
Feng Fei said easily, "Ten minutes by car, I feel quite close." ” The long-haired girl was speechless: "It was so hot a few days ago, and it was very hard." ” "Hey, who told me not to be angry at the beginning and didn't pass the exam."
Feng Fei flipped through the book, and the big lama said, "It's not as good as you, I was squeezed next door, and now I can only hold the book to skip the class." ” The two girls laughed.
In the second row of the classroom, the mobile phone in Haixiu's pants pocket vibrate, and he glanced at the old professor and looked down at the phone Feng Fei: It's here.
Haixiu's heart was sweet, he glanced at the professor carefully, turned his head to look at the back row of the classroom, he glanced at it, and saw Feng Fei talking to the girl in the next class, Feng Fei looked at the phone with his eyes down, with a smile on the corner of his mouth, but the other two girls were red with laughter.
Haixiu turned her head, a little jealous.
Jealous is jealous, Haixiu still had to reply to the message, he put his mobile phone under the table and typed: See, wait a minute, class will be out soon.
In the back row of the classroom, Feng Fei was always staring at his mobile phone, and as soon as the screen lit up, Feng Fei's eyes lit up, and he quickly replied: I know, listen to your class.
Feng Fei put the phone back in his pocket, flipped through the two pages of the book, the professor's lecture entered from his left ear, and came out from his right ear as it was, he sat up straighter, looking at the back of Haixiu in the front row of the classroom, he was in a very good mood In the afternoon, he and Haixiu had no classes, and tomorrow morning, he and Haixiu did not have the first class, and they could sleep until they woke up naturally.
There are many classes in the freshman year, and there are not many such opportunities on weekends, so Feng Fei secretly thinks in his heart and plans what to do for a while.
It's certain to go to eat first, after eating, watch Haixiu and eat sleepy, if you are sleepy, then go home to rest, if you are not sleepy, then go to the movies, go to the supermarket to buy ingredients after watching the movie, and go home to eat hot pot at night.
The weather is already a little cold, just in time for eating pots.
After dinner, Feng Fei licked his lips, no matter how Haixiu begged for mercy and said good things today, he would not let him go so easily as he seemed last night.
When the two made out last night, Feng Fei played a little more tricks, and almost cried out when Haixiu tossed, and finally Feng Fei pinched Haixiu underneath and asked him to call his husband, if he didn't call, he wouldn't let go, Feng Fei hadn't done this before, but Haixiu wouldn't have called, he was too shy, he would rather endure it, Feng Fei was just teasing him, but yesterday I don't know why, maybe he was bullied too much, or maybe he missed Feng Fei too much, Haixiu really cried out.
Feng Fei didn't expect to hear this sound at all, and after being stunned for two seconds, the toss became even more fierce.
Haixiu didn't expect that he was screaming, but he was made even worse, he was aggrieved, and he kept begging Feng Fei, and after one time, Feng Fei had to come again, but Haixiu said that he would not say anything.
Feng Fei looked at the high math book in his hand and sighed, he didn't blame himself for it Last night, Haixiu could still refuse himself on the grounds that he had two big classes this morning, but not tonight, Feng Fei recalled the two words that Haixiu called him last night, and unconsciously smiled on his face.
Feng Fei looked down at the book, with an evil smile on his face, looking at it from the side, it was so handsome that people couldn't take their eyes off it, the two girls kept whispering, and the short-haired girl also secretly took a photo of Feng Fei and passed it to her classmates at the school next door, telling her that Feng Fei came to her side and listened to the class in a classroom with her.
Half an hour later, class ended.
Haixiu took a picture of the board book with his mobile phone, packed the textbook, picked up the schoolbag and walked to the back of the classroom, Feng Fei got up to meet him, wanted to take Haixiu's schoolbag, and said, "Hungry or not" Haixiu let go of the back, didn't let Feng Fei take his schoolbag, he had a lot of things in his schoolbag today, it was not light, Feng Fei also had several books in his schoolbag, Haixiu was willing to let Feng Fei carry two, he nodded: "I'm a little hungry, what do you want to eat?"
"Go to the new store and eat Shanghai food."
Peak is not the way.
Haixiu had no opinion, and walked out with Feng Fei, and saw that the two girls were still looking at Feng Fei, Haixiu paused, and suddenly whispered: "Today's schoolbag is so heavy." ” Feng Fei smiled, naturally passed Haixiu's schoolbag, hugged his shoulder, and smiled in a low voice: "I was ruthless yesterday, and I lost all my energy." ” The two girls who were watching them not far away blushed unconsciously, looked at each other, and felt that the grass of the school next door and the grass of the class next door stood together in perfect harmony.
Haixiu played this kind of trick for the first time, his ears were red, he and Feng Fei went out of the classroom, walked out of a section and snatched the schoolbag back, Feng Fei looked at him in surprise, this time he really didn't understand what was wrong with him, Haixiu said: "You carry two, I feel distressed." ” "Tease me again" Feng Fei pinched Haixiu's face, "Let's eat." ” The two went to eat Shanghai food together, and they didn't feel sleepy after eating, so they went to the movies together, and after watching the two-and-a-half-hour movie, it was nearly five o'clock in the afternoon, and the two bought hot pot ingredients together and went home to cook hot pot.
"What's wrong with you today?"
Feng Fei bit an apple, looked at Haixiu who was putting all kinds of vegetables on the plate, and asked, "Why did I think you were a little wrong when I picked you up at noon?"
Haixiu was stunned, and she forgot about it: "What's wrong with me?"
"When I took you there, you didn't look right."
Feng Fei snapped off a piece of apple and chewed it, "Someone bullied you to tell me his name, and I'll teach him how to be a man." ” "No" Haixiu tried to think about it and knew what was going on, she was embarrassed at first, and shook her head vigorously, "It's okay, really." ” Feng Fei narrowed his eyes slightly and said, "Say." ” Feng Fei just said one word, Haixiu was already cowardly, he was embarrassed to think about it now, but Feng Fei had always wanted to break the casserole and ask him to the end, Haixiu blushed slightly and said honestly.
Feng Fei almost choked with laughter.
Hae-so apologized: "I don't know what's going on, I just want to be pretentious in front of them" "No, no, you're not hypocritical, you're drawing territory."
Feng Fei had a big smile on his face, walked to Haixiu's side, and lowered his voice, "I'm jealous" Haixiu nodded and whispered, "You and the two of them are talking and laughing."
Feng Fei put aside the half-eaten apple in his hand, coughed with a smile, and said, "You saw me laughing with them, and I smiled at the aunt who was sweeping the floor in the movie theater today, what does this mean?"
Feng Fei took another step forward, and hit Haixiu with his lower body quite hooliganly, and laughed in a low voice: "What does this mean, you see who I have done this to" Haixiu's face turned even redder, and he shook his head slightly: "No" "Then what's not to worry about" Feng Fei felt itchy in his heart, and said softly, "However, knowing that I am jealous, I am quite satisfied that I am not hungry."
Haixiu didn't understand how Feng Fei asked this, and said, "What's wrong if you're not hungry?"
Haixiu ate very well at noon, and ate some snacks when watching a movie in the afternoon, and now he doesn't feel hungry, Feng Fei smiled: "It's okay if you're not hungry, I'm not hungry, then don't be in a hurry to cook today, I'm jealous, my husband rewards you." ” Feng Fei lowered his head and kissed Haixiu, kissed for a while, and suddenly hugged the person to the cooking table.
Hae-so: "Hmm" The "reward" of the peak hooligan is naturally not so easy to consume, but in the end, Haixiu also likes it.
A few days later, Feng Fei went to Haixiu School to skip classes again, and happened to meet the two girls' classes and Haixiu classes together for a big class, Feng Fei and Haixiu entered the classroom and met them head-on.
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The long-haired girl was excited when she saw Feng Feixiao, and she stumbled and greeted: "Same, classmate, come to the class again."
"No, I just said it casually last time."
Feng Fei smiled, "I'm here to accompany him." ” Hae-so: "" Feng Fei pulled Haixiu to find a place to sit down, and the long-haired girl and the short-haired girl glanced at each other.
The long-haired girl stumbled even more: "I'll just say it." ” The short-haired girl swallowed her saliva: "Last time I heard my classmates from the school next door say that Feng Fei never jokes with girls, and he can especially keep his distance, so I was a little suspicious." ” The two girls are related to each other and have found a place to listen to the class with peace of mind.
On the podium, the professor looked at the boy next to Haixiu, thought hard, and always felt familiar, but he couldn't remember which class he was from, the old professor shook his head, no longer bothered, and started the lecture step by step.
In the middle of the classroom, Haixiu had an irrepressible smile on the corner of his mouth, trying his best to concentrate on listening to the class, Feng Fei beside him, took out the magazine he had just bought, pressed it under the textbook, and read it with relish.
Outside the classroom window, the leaves of the plane tree are golden, the cool breeze blows, the sky is high and the clouds are light, and the ground is a good autumn color.
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