After the English test ended, bursts of cheers rang out from the first and second floors of the teaching building, and all the first-year students were cheering and celebrating.

Because this exam is over, it means that they are ushering in the National Day holiday. During the seven-day National Day holiday, they can go home.

Except for those day students who can go home every day, it is the first time for the dormitory students to leave home for so long. Especially for students outside the county, it is the first time for them to leave the township and stay in a strange place like the county for a month.

They all miss home.

It’s not just girls who love their families, boys also love their families. It’s just that even if boys love their families in their hearts, they will act heartlessly and those who despise their families are cowardly people.

Many students even prepared their luggage last night. As soon as the exam was over, they immediately ran back to their dormitories, took their luggage and hurried to the station to catch the bus.

Liu Yichen was not in a hurry and did not go back to the dormitory. He did not plan to go home so early. Instead, he went to the library to read. The accumulated reading time in the library for task 3 was 1,000 hours. It would appear in front of Liu Yichen every day, constantly reminding Liu Yichen that he could not

Relax and work hard!

Fight hard and work hard!

This is what the Xueba System keeps telling Liu Yichen every day.

After picking up the high school physics elective 3-5, Liu Yichen became highly focused and entered a wonderful state where he could not feel the passage of time at all and was immersed in the sea of ​​books as if there was no one else around.

The entire high school physics elective course is 3-5. In fact, the score for the college entrance examination is about 3 to 5 points. The most important thing is the law of conservation of momentum. Through the collision of two small balls, we can explore the law of conservation of momentum, or actually

Just understand a formula - m1v1m2v2=m1v1'm2v2'!

This law of conservation of momentum will be combined with the conversion of potential energy into kinetic energy in compulsory course 1, and the corresponding formula will be derived from the law of conservation of momentum.

As for the wave-particle duality, there are relatively few exams in the college entrance examination. It just explains the particle nature of light, and then the classic sinusoidal figure. If you learn mathematics well, you can easily solve the problem by simply reading it once. This wave-particle duality

Sex, unit exams, mid-term exams, and final exams are easy to take, but when it comes to the college entrance examination mock exams in the senior year of high school, they rarely appear.

As for the final atomic structure, the nucleus, there are even fewer tests, which are only for understanding. After all, even high school physics teachers, many of whom do not understand this aspect themselves, let alone teach students.

"No wonder it is divided into liberal arts and sciences and vocational high school textbooks. The courses are really different. The science subjects are much richer in content and much more difficult. The liberal arts and vocational high schools are much simpler." Liu Yichen touched his chin and said thoughtfully.

.

After reading the entire high school physics, he understood why there are 12 high school physics textbooks, but among the required elective textbooks, the science subjects are electives 3-1, 3-2, 3-3, 3-4, 3-5.

Liberal arts students only need to master electives 1-1, 1-2, while vocational high schools require electives 2-1, 2-2, 2-3, because this is actually because different levels require different physical knowledge.

In other words, high school physics requires science subjects to master more knowledge, which is actually for further deepening in college. Regardless of liberal arts and vocational high school, they are more exposed to knowledge and do not need to master too much physics knowledge. In the future, college will basically not

How to study college physics.

"Now that I have finished studying the entire high school physics textbook, the system should have changed!" Liu Yichen thought to himself.

Then Liu Yichen opened the system and saw that his system interface had changed:

a:Mathematics:lv0(6/10)

b:Physics:lv1(0/20)

c:Biology:lv0(6/10)

d:Chemistry:lv0(7/10)

e: Chinese: lv0 (2/10)

f:English:lv0(2/10)

Points:15

Lifespan in the upper left corner: 366 days

Sure enough, physics has been upgraded from lv0 to lv1.

"Congratulations to the host. Physics has been upgraded to level 1. In view of the host's serious study, correct attitude, and score of S, an additional random lottery opportunity will be awarded. Would you like to conduct the lottery immediately?" The cold voice of the system's metal machinery sounded.

Liu Yichen was a little surprised. He didn't expect that the physics would be improved by one level and he would get an extra chance to draw a lottery!

good!

very good!

This dog system finally looks like a good system!

"Wait a minute!" Liu Yichen quickly walked out of the library and came to a corner at the back of the library. He took a deep breath and said secretly: "System, lottery!"

Immediately, a lottery interface popped up in the system, like a roulette wheel with dense words written on it, and the roulette wheel began to spin rapidly.

Liu Yichen held his breath. He stared at the roulette wheel, trying to follow the trajectory of the pointer. He also wanted to see clearly what was engraved on the roulette wheel!

Unfortunately, the roulette wheel spun so fast that he couldn't see clearly.

"Stop!" Liu Yichen shouted like a gambler with red eyes.

Then I heard——

"Ding~~" The metallic voice of the system sounded: "Congratulations to the host, you have obtained the junior level of calligraphy. How can you be a true master of academics and write bad handwriting? I hope that the host will continue to work hard and continue to move forward bravely on the road to academic masters!

"

For a moment, Liu Yichen seemed to have enlightened himself, as if he had become a calligrapher.

"This luck... isn't very good. I thought I could get some good rewards." Liu Yichen muttered to himself.

Although his calligraphy is very average and not beautiful, it can still be seen clearly. He insists on practicing calligraphy every day and believes that the calligraphy will become more beautiful as he writes. This reward for calligraphy cannot produce direct benefits.

Liu Yichen was honestly a little dissatisfied.

But what can I say, it’s better than nothing!

Taking a deep breath, Liu Yichen returned to the library, feeling his stomach growling. He was so immersed in reading that he hadn't even had lunch yet.

After returning Physics Elective 3-5 to the library, Liu Yichen went to the cafeteria and bought two tea eggs, a piece of bread and a bottle of milk. After a brief lunch, he continued to work in the library.

And students in the third and second grades of high school are taking exams now.

Liu Yichen borrowed two high school chemistry books, Basic Organic Chemistry and Experimental Chemistry, and continued reading.

Liu Yichen found that his handwriting suddenly looked much better. Although it was a lot worse than the handwriting posted on the bulletin board, it was much better than his original handwriting that could be seen clearly.

"Sure enough, the effect is very obvious. The words are beautifully written and make people feel happy. No wonder the teacher said that if the composition is well-written, as long as the number of words meets the requirements, at least 80% of the score will be given." Liu Yichen looked at it.

The handwriting I wrote is clear and beautiful, neat and orderly, stroke by stroke. Compared with before, it is completely different and makes people feel comfortable.
Chapter completed!