Lan Jie has entered a new strategic stage, and he is actively preparing for the preliminary round of the four university competitions.

At the tactical level, 13 hours a day is not enough, Lan Jiejia has 3 more hours, he studies 16 hours a day, and he learns to death!

The intensity of 16 hours of learning is too high, and when you are exhausted, you will fall into a state of brain short-circuit, and you will not be able to learn anything, not only tired, but also irritable, and you can't even sleep, you just want to be quietly in a daze, or vent irritablely.

One of the reasons why people are irritable is that they do not complete the preset goals, and then they will be held by the boss, by the teacher, and by the parents.

At this time, it is a great test of learning efficiency, and a healthy and strong body is the foundation of efficient learning.

Or, if you don't set goals at all, there will be no performance without goals, there will be no performance if there is no performance, there will be no pressure if you will not be held, and the whole person will be very happy.

Now that Ranger has set goals, he finds happiness in the way he achieves them.

Despite his busy academic schedule, Ranger did not give up physical activity and had to get at least 10 hours of exercise per week.

After exercising, Lan Jie's learning efficiency is super high, usually doing five questions an hour, and after exercise, Lan Jie does ten questions an hour!

With the assists of Beethoven and Mahler, Ranger can do fifteen competition-level puzzles in an hour, and all of them are right!

If you drink a little more sauce-flavored liquor......

Inspiration explodes!

Instantly invincible!

Everyone's approach to learning is different, but the most important thing is to build on a solid foundation, and if the knowledge base is not solid enough, no amount of bells and whistles will work.

The accumulation of knowledge is not an overnight effort, and in the past ten years, Lan Jie thinks that he has accumulated enough basic knowledge, and what he is doing now is to strengthen his skills.

Aggrandizement!

Aggrandizement!

Aggrandizement!

On the evening of September 6th, Lanjie received a medal of honor at the same time, and abstract thinking added one!

At this time, Ranger was listening to Mendelssohn's "Song of Spring".

The melody of "Song of Spring" is beautiful and tactful, which helps you sleep.

This piece is very concrete, why does Applejack's abstract thinking add one?

Ranger was puzzled, and he could only force a wave of explanations: Mendelssohn and his musical works have a certain hidden property that stimulates abstract thinking?

A more reasonable explanation is that it is impossible for any kind of thinking to add one in just a few minutes, and the abstract thinking at this moment is because Applejack has completed high-intensity learning in the past week or two, and Applejack happened to be listening to "Song of Spring" in the short time when the system was settled.

Either way, listening to classical music is a good habit, and I hope to keep it up.

On September 7, Ranger woke up at five o'clock as usual.

The first thing I do when I wake up is to worship my big brother.

'Brother Physics, good morning. ’

'Last year today, I failed, I failed miserably. ’

There's nothing more painful in the world than I could. ’

Today, I, Applejack, are back in the field, starting all over again where I failed. ’

I didn't fight for this to get back what I had lost. ’

It's to prove that I, Applejack, are amazing. ’

'Big Brother Physics, please bless me with the invincibility of physics. ’

'Kowtow!kowtow!'

After worshipping the eldest brother, Lan Jie was extremely relieved, he ate seven minutes full for breakfast, and made a pot of coffee after the meal, adding sugar without milk.

Because of the effect, Rangie will not be sleepy throughout the day.

He has a habit of drinking coffee, and a cup of coffee in the morning will make this morning as familiar as usual.

After tasting coffee, Lan Jie took the admission ticket and answering tools and went to the Yueshan District Examination Center.

In the preliminary round of the physics competition, the registered sheep middle school students went to the examination room on their own. Many of the students Lan Jie knew had signed up for this year's CPhO, and there were double digits of students in the preliminary round of CPhO at the Yueshan District Test Center.

"Hey, Zihan!" On the second floor of the No. 1 exam building, Lan Jie met Wu Zihan.

"Hey, Brother Jie!" Wu Zihan was full of fighting spirit, the T-shirt he was wearing was made of ordinary material, but the pattern on his chest was peculiar.

The pattern of Wu Zihan's T-shirt is: 200.

Lan Jie asked with interest: "Where did you buy this T-shirt?

Wu Zihan nodded and said, "Yes, it is customized on the Internet, and the picture is auspicious." ”

Lan Jie touched the 200 on Wu Zihan's chest: "Zihan, you are really thoughtful, I also have some mana, you won't mind, right?"

"Brother Jie, you have touched it, what can I ......" Wu Zihan covered 200, and he immediately said passionately: "Brother Jie, come on, let's fight side by side in the rematch and the national competition!"

"It's a must! Zihan, come on!"

The two of them said goodbye and went into their own classrooms.

Lan Jie is divided into classroom 202, there are 25 players in this classroom, and Lan Jie doesn't know any of the remaining 24 players.

At about nine o'clock, the two invigilators began to distribute the preliminary examination papers.

Ranger had participated in the preliminary round of CPhO once, and he was familiar with the rules of the competition.

The CPhO preliminary round is all theoretical questions, with a total of 200 points, and the exam time is 9 o'clock ~ 12 o'clock.

Lan Jie got the exam paper, there were still dozens of seconds before 9 o'clock, Lan Jie quickly browsed the exam paper, and this year's preliminary exam paper was still 16 questions and 200 points.

'Not a big problem!'

For this exam paper, Lan Jie has a rough assessment.

In the CPhO preliminary round at this time last year, Lan Jie went into battle with illness, which affected his performance, and he only scored 80 points in the test and missed the rematch.

Today's Ranger is not sick or injured, his physical and mental state are in full state, this is the best Applejack, this is the most powerful Applejack!

Ding Ding Ding!

The bell rings, the exam begins!

1. Multiple choice questions, this question has a total of 5 questions, each question is 6 points, in each of the four options, some questions only have one item that meets the meaning of the question, and some questions have more than one that meets the meaning of the question, 6 points for choosing the correct option, and 0 points for wrong selection and omission.

1.1. As shown in the figure, in the straight glass tube with closed at one end, open at one end and uniform inner diameter, there is a 60mm mercury column, when the pipe is placed horizontally to achieve balance, the air column in the closed end A pipe is 140mm long, and the air column in the opening B pipe is also 140mm long. Now the tube is gently inverted, so that the opening is downward, and then vertically inserted into the mercury tank, when the balance is reached, the air column in the closed end A pipe of the tube is 133mm long. Let the atmospheric pressure be 760mmHg, the temperature will not change, and the height H of the mercury entering the tube in the tank will be:

A、42mm；

B、34mm；

C、28mm；

D、16mm。

Obviously, this is a multiple-choice question. ’

'What to choose?'

Allow me to do the math. ’

This kind of hot question, Lan Jie can't remember how many times he has brushed, not 10,000, but 8,000.

Although Lan Jie had never found the exact same question, he knew that the principle of this type of question was similar.

Be confident, remove the word similar and replace it with the same.

That's right, the idea of a glass tube filled with mercury and then inserted into a mercury tank works exactly the same way.