Zhengyangmen: Don’t date Su Meng

There are only four major questions in chemistry.

Question 1: If the reaction can occur, write the chemical equation. If it is an oxidation-reduction reaction, indicate the oxidant and reductant. If it is a double decomposition reaction, write the simplified ionic equation. If the reaction cannot occur, explain the reason.

Well, very classic.

It's also very simple.

The three groups of substances are: silver and copper nitrate solution; chlorine gas and sodium iodide solution; aluminum hydroxide and dilute sulfuric acid.

Han Chunming thought for a moment and then started writing. As for the result, readers can try it themselves.

【Smile.jpg! 】

The second question consists of five short-answer questions, which are very basic. The third question tests the atomic structure diagram, asking which period and group it belongs to, what type of chemical bonds it can form, whether it is conductive, and how to identify the compounds it forms.

Others don’t know, but these problems are of medium level for Han Chunming.

It’s not difficult, but you have to be careful and serious and not make any mistakes.

The last question is about chemical solution, calculate the concentration.

List the reaction equation, write the mass fraction of the ions, and then use the proportional formula to calculate the concentration. The relationship between concentration and mass is also needed. The amount of calculation is okay. Anyway, Han Chunming still had half an hour left after he finished the last stroke.

After he finished his political exam in the morning, he had a clear idea of ​​the result.

For other people, the preparation time for this college entrance examination was only more than a month, but for him it was a full ten months, and he also had the experience of later life, so he seemed so at ease.

But for this set of questions, for those who are not well prepared, the chemical equations alone can stump many people.

This is not alarmist.

Forget it, now is not the time to think so much. Han Chunming closed his eyes, emptied his mind, counted silently for ten seconds, then opened his eyes and began to check.

Calculation is of utmost importance!

He calculated it again on the draft paper and checked it one by one. He actually found the error. One of the resistance tables was wrong and there were two R1s in one question.

This also sounded the alarm for him.

There is a difference between knowing how to do it and being able to get points.

You need to have ideas for solving the problem and know how to solve it, but you also need to put it into practice on the test paper, otherwise everything will be empty talk.

It took thirty minutes to finish the check and the time was up.

I handed in the paper and left, with no intention of communicating with anyone else.

In this short distance, Han Chunming heard many people complain that the test questions were difficult and a bit biased, and many people failed to answer them.

Even though they had been warned not to discuss the results after the exam, Su Meng and Li Chengtao still came to the door as soon as possible.

"Forget it. If I don't explain it to you, you probably won't be interested in learning it. Let's go to my master."

Although the test papers and answer sheets were taken away, the time was short and the two still remembered the questions and answers.

There is no need to talk about politics. The knowledge points are all in the books. If you can't answer them, it means you didn't memorize them hard enough.

The exams for liberal arts and science are different, and Su Meng then realized that she was the only one studying liberal arts.

What can be done then?

Let’s go back to study math and Chinese.

After Su Meng left, Han Chunming and Li Chengtao discussed physics and chemistry. The result was okay. Li Chengtao answered the basic knowledge well, and he also wrote some formulas for the more difficult questions, so he should be able to get some points.

"It shouldn't be a big problem. The next ones are Chinese and math. Chinese is more difficult for you. My suggestion is that you memorize two articles, unity and development. If the theme changes, you can just apply it to the previous one. You should be able to get a lot of points, but there is a prerequisite.

You have to write enough words, even if you have to make up for it, you have to make up for it, understand?"

Li Chengtao nodded somewhat awkwardly.

Just like speaking, Li Chengtao always stutters when it comes to writing and can’t produce a single word for a long time.

It's worrying.

…………

The next day arrived as scheduled. In the examination room, Han Chunming was a little confused looking at a line of words and a blank composition paper.

Just an essay question?

【In this year of fighting...】

interesting.

After careful consideration, Han Chunming decided to use narrative writing.

Although argumentative essays are simple, it is not easy to get high scores. Since he was aiming for high scores, he naturally chose narrative essays to take the test.

Poetry and classical Chinese, Han Chunming never thought about these two literary genres from the beginning.

If you don't have that ability, you'd better just walk honestly.

First make a draft, then check for typos, and finally copy it word for word on the composition paper.

Han Chunming scored at the buzzer and put away his pen.

Then he thought of what he said yesterday afternoon - unity and development, which seemed to be quite suitable for this theme!

Is it...

Is he really a son of luck? He can guess the answer just by guessing casually?

Is it so suspenseful?

Li Chengtao didn't come at noon, and Han Chunming couldn't wait for his thanks, so he felt a little unhappy. After a short nap, he entered the examination room in high spirits.

The last subject... uh, it should be the second to last subject, which is English.

As usual, he wrote his name and test number slowly, not daring to make any mistakes, even though he was tired of writing.

Question 1: Solve equations, square both sides, quadratic equations, move terms, square difference formula, simplify equations, solve. Question 2: Prove equality, convert trigonometric functions.

Five minutes later, over!

For the third question, find the intersection of two straight lines. Solve the two-variable linear equations together, substitute the variables, and get the coordinates of the intersection. Then set the equation of the line, substitute the two coordinate points, and get the equation of the line.

simple!

Output value issue.

Quadratic function graph, vertex coordinates, axis of symmetry; coordinates of intersection with the x-axis and y-axis.

The ship sails, establishes a coordinate system, and uses trigonometric relationships to calculate distances.

These problems could not stop Han Chunming from moving forward, and everyone fell under his sword.

Not enough to be afraid of.

The last two questions are the main course.

Prove in spatial geometry that the products of line segments are equal.

For this problem, he used the method of proof by contradiction. To prove..., he must prove... and then he needed to prove... and then he drew auxiliary lines and used the law of similar triangles and angle bisectors to draw his conclusion.

The last question is about finding the intersection of a straight line and an ellipse.

The constant term in the equation of a straight line is an unknown number. When there is no intersection point; one intersection point; or two intersection points, the unknown number is what it is.

Without further ado, let's assume there is no intersection.

After that, one intersection point, two intersection points, the specific values ​​of the unknown variables were calculated. To sum up: blah blah blah.

Ok, it’s done!

Han Chunming wrote fluently without any pause, and he conquered the entire paper!

There was still nearly half an hour left, and he was still concentrating on writing and answering the questions neatly, otherwise he would have finished even faster.

Needless to say, start checking.

First, make sure that [Solution] is written, this is the standard.

I still remember that my teacher once said: If you don’t write your explanation, I will deduct one point from you even if you get the answer right; but if you write your explanation, I will not give you one point for nothing.

Oh, it's just so unfair.