Saturday, March 17, fine.

There are clouds in the sky.

It was a sunny day.

Early in the morning, Zheng Meiling prepared breakfast for Fang Chao, fritters and soy milk, and bought them no more than 50 meters downstairs at home, five fried dough sticks and five soy milk, a total of three yuan.

Fang Chao turned over all the fritters and soy milk, and then began to pack his school bag.

Paper, pens, rulers, compasses, triangles are all available.

Fang Yuanyang is still sleeping, he drank too much last night, he shouldn't wake up before ten o'clock in the morning, and he is too tired on weekdays, he should have a good rest, and no one bothers him.

Fang Duoduo was also sleeping, and he didn't get up until noon.

The two old men had already gotten up.

Glancing at the time, it was already ten o'clock, Fang Chao didn't dare to delay and said goodbye to his grandparents.

"You kid, do you want to bring a bottle of water? Also, I've got a little bread for you, and you can put it in your bag, so that if you are hungry at noon, you can satisfy your hunger. ”

"Well, thank you, Mom."

Fang Chao put the water on the side of the schoolbag again, put the bread on the inside of the schoolbag, and then went out.

The sun was shining in the sky, the flowers smiled at me, and the stranger said, this child is so diligent, he has to go to class on Saturday, go home and smoke my son, and he will know to sleep on the weekend, and he will kill this turtle grandson~

March is a comfortable time in southern China, and the afterglow of spring is still there.

Fang Chao rode the little electric donkey towards the middle school where he was located.

Chengguan Middle School.

Junior 3 (4) class.

When Fang Chao came to the classroom of the teaching building in casual clothes, the black-faced carbon was already waiting for him in the classroom.

"You're not late, are you?"

Fang Chao hurriedly looked at the time, nine forty-five, fifteen minutes earlier than the agreed time, it seemed that it was not that he was unpunctual, but that the head teacher arrived early.

Black-faced carbon, you're more anxious than me, making me so flustered.

"Coming?"

The moment he saw Fang Chao standing at the door of the classroom, Lin Haifeng spoke up.

Fang Chao hurriedly put down his schoolbag, and then asked, "Teacher Lin, what am I going to do this day?" ”

"Brush up on the questions."

"Huh?"

Lin Haifeng pulled out a few test papers from the podium, and then continued, "Since you can take the first place in mathematics in the class, it means that you have a certain talent in mathematics, and if you want to learn mathematics well, not only logic, thinking and diffusion must be good, but also diligence is also essential, only practice makes perfect, you can have the opportunity to get a certain ranking in the national junior high school mathematics joint competition, these are the questions of the junior high school league exam over the years, I will integrate them together, you can start to do the questions from now on, There is mineral water and bread by the pulpit, and you will eat it when you are hungry. ”

Only then did Fang Chao notice that there was indeed a box of mineral water and a few pieces of bread on the side of the podium.

"Teacher, I have my own."

"Hehe, just you, I'm afraid it's not enough, anyway, I bought it, if you're hungry, go and get it, don't count your money, as long as you give me a little bit of energy, and from now until four o'clock in the afternoon, except for the time to go to the toilet, you are not allowed to go anywhere."

"Yes."

Fang Chao put down his schoolbag, sat down, took out the tools in his schoolbag, and soon began to work hard and entered the answering session.

1. The following factorization is exactly correct ()

A. 2a2+4a=2a（a+2） B. 4x2y2=（2x+y）2 C. a28ab+16b2=（a+4b）2 D. 2x2+xyy2=（2xy）（x+y）

2. The following types of deformations from left to right are factored ()

A.(a1)(a1)a21 B. a26a9(a3)2 C. x22x1x(x2)1 D.-18x4y3=-6x2y23x2y

……

"Multiple choice questions, there is no difficulty, are these really the questions of the competition? I really can't resist my attack, it's a little disappointing......"

Fang Chao bit the tip of his pen, originally thought that the questions of the math competition would make people feel challenged, but now it seems that it is somewhat disappointing.

Soon, Fang Chao picked up his pen and quickly wrote down the answer to the multiple-choice question at the back of the question.

D-B-C-C-A，C-A-D-D-D，B

If nothing else, the scores of the multiple-choice questions were all in hand, Fang Chao was very excited and moved on to the next step.

Answer the questions.

1. Decomposition factor: 9x3-18x2+9x=________

2. The common factor of the polynomial 12x3y2z3+18x2y4z2-30x4yz3 is________

……

"Oh, what, it's so easy."

Without any hesitation, Fang Chao picked up his pen again and began to write the answer.

1：9x（x1）

2：6x2yz2

3：……

Lin Haifeng swiped his mobile phone on the podium, watched the daily news, read the current situation of the global situation, and the unity of the motherland's territory.

While secretly checking whether Fang Chao was serious about doing the question, he watched the news, his brows furrowed from time to time.

"Fang Chao, why is this kid moving his pen so fast? Doesn't he even review the questions? When he finishes this paper, I have to tell him ......."

When he was thinking about it, Lin Haifeng looked at the news on his mobile phone again, and said in his heart, "The motherland is not missing at all!" ”

"Answering the question, tsk, it seems to be very easy, there is really no pressure at all."

Question 1, 8 minutes.

Question 2, six minutes.

The second question is definitely more difficult than the first question, but Fang Chao's thinking is exceptionally clear, and the more he fights, the more courageous he becomes, there is no obstruction at all in the whole process of solving the problem, if there is divine help.

This feeling is the same as playing Glory of Kings at the beginning and taking two heads, the economic strength has been directly improved, you can buy an upgraded jungler knife, the attack effect is amazing, and there is Papa Smurf's BUFF bonus, directly killing the entire exam paper with a hideous face, there is no innocence at all, it is completely deprived, there is not even a little place to hide shame, it is all written with various English letters and numbers written by Fang Chao.

"Hmph, what, it turns out that the exam papers of the math league are just like that."

Question 3, 10 minutes.

The entire process takes six minutes for multiple-choice questions, 13 minutes for fill-in-the-blank questions, and 24 minutes for three application questions.

The total duration of the paper is 43 minutes.

The normal time for an exam paper is 90 minutes, but this is not a normal exam after all, so the time reserved by Lin Haifeng for Fang Chao is two hours, hoping that he can complete the answer sheet within two hours.

And at the end of the whole day, Fang Chao was asked to complete four test papers.

Four test papers, this is already very difficult for ordinary people, it consumes too much brain power, and it may even produce a state of hypoxia, and in a serious case, it is possible to fall into a magic barrier, so Lin Haifeng controls the time very well.

To put Fang Chao in a perverted and unchanging situation.

He wants to exploit all the value of Fang Chao, but he doesn't let him collapse!

But he had just finished watching a few news, and Fang Chao on the other side raised his hand and said, "Teacher, I've finished answering the paper." ”

Lin Haifeng was stunned for a moment, glanced at the time, and finished answering the question in less than an hour, and immediately his face became a little ugly.