"Zi~" There was a little noise at first, not like the sound recorded by professional equipment, but like audio recorded with a mobile phone.

After waiting for a while, Su Qian's voice rang out.

"Lalala~ It's me." Su Qian's voice was filled with joy that was difficult to hide.

Chen Ti withdrew his right hand that was about to pick up the pen and listened quietly.

"I didn't expect it, hehe, these sounds were recorded by me when I was free on vacation, and each audio is about five minutes long, and they are some interesting things that I myself encountered during the holiday or what I want to say to you when I miss you."

"Why did I think of recording these audios, it's just that one day, I suddenly thought, you should be a little lonely studying alone in the room, so yes, I'm here to accompany you."

The corners of Chen Ti's mouth were slightly hooked, and he listened to Su Qian's chatter with a slugging face, as if there was really a girl with a smile like a flower talking happily in the quiet room.

“……”

"Okay, that's all for today, I don't know if you listened to me, listen to this audio before studying, but it's okay, if you're going to sleep, then good night. If not, then go for it! ”

With a hint of playfulness in Su Qian's voice, he ended the recording of this audio.

Taking off the headphones, Chen Ti suddenly felt that his spirit was more sufficient.

Well...... Today, I will do two sets of comprehensive papers.

Chen Ti moved his wrist, picked up the pen on the table, and began to quickly sort out the papers.

Su's shallow bedroom.

Su Qian looked at the time on the clock, wondering if the stupid guy had listened to her, if not, he hadn't heard his last words according to the time......

emmm…… No, I'm going to tell him tomorrow.

Su Qian put the pen on his lips and pouted in thought.

……

"Have you listened to me? You can only listen to one a day. ”

On the way to school, Su Qian couldn't wait to ask about the audio as soon as he saw Chen Ti.

Chen Ti said seriously: "I know, one a day, never listen much." ”

Looking at Chen Ti's appearance, Su Qian knew that he had listened to these words, so he smiled with satisfaction: "That's good, okay, it's time to test your biology knowledge." ”

"What is the essence of genetic segregation?"

"In a heterozygous cell, an allele located in a pair of homologous chromosomes with a certain degree of independence......"

The two rode bicycles, tested each other's knowledge points, and arrived at the school gate.

He Jianguo saw the two of them riding over together, and when he got closer, he heard the two of them leaning on each other's knowledge points.

The expression on his face was still very serious, but there was some relief and surprise in his heart.

He has seen a lot of early love at school, all of which are declining in learning, thinking about love and love all day long, and completely forgetting that he is a student.

And Chen Ti and Su Qian...... On the contrary, his studies are getting better and better, and his final exam scores are one first, the other second, and he is more than 30 points higher than the third place.

This is the first time he has encountered such a situation in his 30 years in the industry.

"Director He, morning!" Su Qian said sweetly when he passed by He Jianguo.

A smile appeared on He Jianguo's serious face: "Well, early! ”

Back in class, each returned to their seat and began to prepare for self-study.

Now that most of the classes have ended, they have begun to enter a round of revision, and when the bell rings for the first math class, everyone takes out the textbook of math compulsory one from their school bags.

Wang Zhonghua stood on the podium with a somewhat serious expression: "Today is the first day that everyone officially enters the third year of high school, and it is also the first day of our first round of review......

Chen Ti was a little emotional when he heard this, it was the same at the beginning, he picked up the textbook, studied hard, and created a miracle in a year of one middle school.

On the podium, after Wang Zhonghua finished what he wanted to say, he opened the textbook and began to lecture.

"Compulsory 1 Chapter 1, Collection."

"The first point, the concept of sets and elements, Hou Jun, you can talk about it." There was a transcript of the final exam of the second semester of the second semester of high school on the podium, Wang Zhonghua glanced at it and said.

Hou Jun immediately stood up, took the textbook and read: "Generally speaking, we call the whole of certain objects specified as a set, and each object in the set is called the element of this set. ”

Wang Zhonghua nodded, waved his hand for Hou Jun to sit down, and continued to lecture, every time he talked about a concept, he would definitely ask a random person to stand up and read aloud.

It's also to keep everyone's attention in attendance.

There are not many knowledge points of sets and logical terms, and it is usually the content of the first chapter of the first compulsory test for the first multiple-choice question in the college entrance examination.

After Wang Zhonghua finished the first chapter of knowledge points, he began to write questions on the blackboard.

"If we know that the point P is not on the line l,m, then "the point P can be made into an infinite number of planes, making the line ......"

After writing the question, Wang Zhonghua said: "Su Qian, you can answer this question." ”

Su Qian, who was next to the podium, stood up, looked at the question on the blackboard and frowned slightly, the question of conditional relationship is her weakness, because she has forgotten this knowledge for too long, and she also puts too much thought into this aspect after being reborn.

She hesitated a little and said, "Choose...... a, necessary but not sufficient conditions. ”

"Huh?" Wang Zhonghua was a little surprised, the difficulty of this question he came out was considered to be medium to high, so he chose Su Qian to answer, but he didn't expect Su Qian to answer incorrectly.

"Hmm...... No, Chen Ti, you answer. Wang Zhonghua shook his head and set his eyes on Chen Ti, who was in second place.

When Chen Ti stood up and was about to answer the question, the class shook out.

The pair of Chen Ti and Su Qian can be regarded as the unprecedented official default CP, so the students will make jokes about the two in front of the teacher.

After all, the study life in the third year of high school is extremely depressing, but if there is a little fun with Coke, the atmosphere of the whole class will instantly become joyful.

Wang Zhonghua coughed: "Okay, be quiet, continue to answer the question." ”

It's nothing for Chen Ti to be joked about by his classmates, anyway, he is thick-skinned, so he said straightly: "Choose C for this question, which is a sufficient and necessary condition." ”

Wang Zhonghua nodded: "By the way, choose C for this question, and the two of you sit down." ”

When Wang Zhonghua said correctly and asked the two of them to sit down, the class made another wow, but the voice was a little quieter.

"Because the point p is not on these two lines, it is said ......"

Well...... In the future, you can't call two people in a row.

Wang Zhonghua thought in his heart while explaining the topic.