Chen Zhou touched his head in embarrassment. When he was thinking about how to explain, he saw the draft paper in Wang Xuehui's hand.

His eyes lit up, he quickly stood up and took the draft paper in Wang Xuehui's hand.

Then, pointing to a question written down on the draft paper last night, he said: "Teacher Wang, you are just here. Please help me look at this question. I have been working on it for a long time and haven't finished it yet."

"No, I asked you how to learn..."

Before Wang Xuehui finished speaking, Chen Zhou immediately interrupted: "Teacher Wang, if it were you, I would definitely solve it in minutes. I'm not very good at this, can you come and show me?"

Wang Xuehui said nothing, just looked at Chen Zhou.

Chen Zhou immediately looked like he was eager to learn and asked questions, and his finger was still pointing at the question.

After about ten seconds, Wang Xuehui slowly said: "Show me the question."

Chen Zhou immediately handed over the draft paper, pointed at the question again, and said, "Teacher Wang, look, this is the question."

Wang Xuehui glanced at Chen Zhou again, then looked down at the topic on the draft paper.

Seeing this, Chen Zhou breathed a sigh of relief and thought: "I finally changed my focus. Once the topic is finished, I will almost go back to school..."

There was no way, Wang Xuehui said something like "You're a little too arrogant", Chen Zhou didn't dare to be careless and could only take it seriously.

On the draft paper was a question about proving the limit of a function. After Chen Zhou wrote it down last night, he didn't have time to do it yet, and he didn't know if it would work.

Just when Wang Xuehui was reading the questions, Chen Zhou also read the questions with Wang Xuehui.

The question is very simple, only one sentence.

"Prove that lim(x→3)(x²-x-6)/(x-3)=5 according to the definition of function limit."

Wang Xuehui read the question, thought about it, and then asked Chen Zhou: "Chen Zhou, what is the definition of function limit?"

Chen Zhou was a little slow and replied: "During a certain change process of the independent variable, if the corresponding function value is infinitely close to a certain number, then this certain number is called the limit of the function during this change process. ”

"That's right, I remember it was quite familiar." Wang Xuehui nodded, then picked up the pen on the table and began to explain while writing.

"First, you take any ε0 and there is d=ε such that x-3 is satisfied for all x "Yes." Chen Zhou nodded, then glanced at Wang Xuehui.

Wang Xuehui also glanced at Chen Zhou, hesitated slightly, but continued: "Then, there is (x²-x-6)/(x-3)-5 = (x²-x-6-5x+15)/ ( x-3) = (x²-6x+9)/(x-3) = x-3, and x-3 <d=ε, then the original question is proved? "

Chen Zhou subconsciously wanted to nod, and then hurriedly looked deep in thought without saying anything.

Wang Xuehui just looked at Chen Zhou like this. Normally, after he finished explaining the topic, he would not disturb the students' thinking.

This time, too.

After waiting for a while, Chen Zhou felt that it was almost done, so he nodded slightly and said, "I understand, thank you, teacher."

Seeing his appearance, Wang Xuehui couldn't say anything else. He just pointed at Chen Zhou, but in the end he didn't finish what he said before.

At this time, the landlord called Wang Xuehui to eat, Chen Zhou also packed up the papers, and the two of them left the house together.

When Chen Zhou was about to walk out of the landlord's house and go to school, Wang Xuehui finally said: "Chen Zhou, learn advanced mathematics when you have time, don't delay your current study. The college entrance examination is around the corner, there is no room for slacking off, you... .Understand?”

Chen Zhou looked back at Wang Xuehui, smiled, and immediately said: "Teacher, don't worry, I will definitely put the college entrance examination in the most important position."

After saying that, Chen Zhou hurried to school. He suddenly thought of a joke Chen Haining and the others had said before, about whether students are different in the eyes of teachers?

Chen Zhou now feels that there may be something really different.

After this incident, Wang Xuehui did not talk to Chen Zhou alone again.

But Chen Zhou still steadily outputted his firepower in the exam, and kept sprinting forward with negligible progress.

This kind of stable performance is probably one of the reasons why Wang Xuehui did not find Chen Zhou.

April is almost halfway through, and the countdown to the college entrance examination on the blackboard behind the classroom has been reduced to 50 days.

In about half a month, it will be the third mock test before the exam.

Half a month is very fast for Chen Zhou who is immersed in the review plan and studying high school mathematics.

Through this period of study, he has learned about a quarter of the first volume of Advanced Mathematics (Sixth Edition).

Although many of the knowledge points in the previous volume were already familiar to Chen Zhou, he did not skip over them directly, but studied them carefully again.

Therefore, Chen Zhou learned a little slowly.

After this period of adjustment, Chen Zhou was able to control the amount of psychoactive drugs well.

In fact, if he had an instrument like a measuring cup, it would be more accurate, but unfortunately, the conditions did not allow it.

During this month of taking medicine, Chen Zhou also discovered something.

Now he is drinking potion every day to assist his studies, but he has never had the same problem as the first time, when he drank three days and needed one day off.

This made Chen Zhou feel very strange. Could it be that his body has developed drug resistance? But the effective time of the medicine has not been shortened?

Chen Zhou really couldn't figure it out, so he had to give up.

As the time reached the end of April, with 43 days left in the countdown to the college entrance examination on Hou Blackboard, the notice for the Model Three exam came down.

Two days, April 26th and 27th.

For college entrance examination students, the third mock test is actually the last serious mock test in the true sense.

Although there will be the last four-mode test in late May, it is more like a warm-up match before the college entrance examination, an exam of adaptability and adjustment.

The main function is to give candidates a chance to practice before the exam to see if the exam status is normal and whether it feels like a big exam. By the way, it can also reduce the difficulty of the questions to help candidates build confidence.

Therefore, candidates need to seize the opportunity of the three models, pass this exam, and test the effect of their review in time, and check for any omissions.

In this way, you can further study your own learning status, enter the preparation state in advance, and adapt to the exam environment.

The three-mode model is equivalent to a comprehensive physical examination and has great reference value.

No matter whether you do well or fail in the exam, you still have a month to adjust.

Chen Zhou didn't make any special preparations for this three-model exam.

After all, he has always attached great importance to both major and small exams.

However, what Chen Zhou didn't expect was that he would revisit the old place again.

His exam room this time was the same as the Christmas exam, but he didn't know if Yang Yiyi was still next door.

There will be a Chinese language test in the morning and a math test in the afternoon on the 26th.

On the 27th, I will take the comprehensive science test in the morning and the English test in the afternoon.

According to Chen Zhou's habit, Chinese writing begins with composition.

After finishing the composition, go on to solve the previous objective questions.

Mathematics is done step by step from choosing to filling in the blanks to solving questions.

In the Science Comprehensive Examination, the exam questions are divided into subjects according to the order of physics, chemistry, and biology.

In English, fill in the blanks first. You can probably finish it before the listening begins. Then, when the listening begins, do the listening.

After the listening is over, continue with the questions from the cloze.

On the afternoon of February 27th, the last English test was held.

Chen Zhou, who handed in his papers in advance, packed his backpack after walking out of the examination room, and leaned on the desk outside the classroom, waiting for Yang Yiyi.

When Chen Zhou finished his first Chinese exam, he discovered that Yang Yiyi was in the exam room next door just like the Christmas exam.