Chapter 132: I know the answer to this question

Li Xin was named by the teacher to help a classmate. Her face wrinkled, but she still agreed: “Teacher, I will. Hongfei, if you don’t understand anything, you can ask me. You haven’t been here for a semester. I wonder if my grades have improved by a few places.”

Although Qin Hongfei didn’t have a good impression of her dog, she was very willing to help her. Outsiders thought that she hadn’t been back for a semester, but in fact, she had returned to the classroom after more than 20 years. Don’t say… there might be a lot of places where she needs help.

So she happily accepted it: “Thank you.”

This exchange was quite pleasant.

The first class was to check homework. Qin Hongfei didn’t have homework. She just familiarized herself with the knowledge in the new textbook. From studying for a doctorate to studying in junior high school, it would be a bit hypocritical to say that she still remembered the textbook knowledge.

She had studied them a long time ago, but it wasn’t that bad that she had forgotten everything. She could still remember it after reciting it.

Even if she can’t remember the knowledge points, she can interpret them by herself.

Qin Hongfei familiarized herself with the textbooks she got, and she immediately had an idea in her mind. Fortunately, the memory points were still there, and she made up for the missing ones, which were enough to use.

There would be no problem with the 90 points promised to the old lady.

While flipping through the pages, she saw an equation and paused. This question……

Li Xin had been looking at her, knowing that she hadn’t read it last semester, and there must be a lot of things she didn’t understand that needed help. Thinking of the teacher’s instructions, she said with a little bit of arrogance: “What’s wrong, what do you not understand, do you need me to lend you your homework? I tell you, if the teacher didn’t ask me to lend it to you, I would not lend it to you. Others want to borrow it but can’t, and my grades are all excellent!” She said proudly.

Qin Hongfei needed help, and Li Xin was willing to help, so she asked without hesitation: “Well, there are some things I don’t understand. How did you solve the equation for this question?”

Li Xin looked at it and saw a chemical equation. The teacher had taught it last semester, but because it was said to be taught in the second half of the semester, she didn’t talk much about it. Ribose is an indispensable substance for human life. Ribose is known…

After browsing the questions, Li Xin suddenly looked like every student who finished writing the test paper during the exam, and was confident that the test paper could get full marks: “The teacher talked about this question, I remember, let me calculate it…”

Qin Hongfei suddenly became interested and watched her convert it.

The other students were bored and came over. With so many people, Li Xin had more face.

She explained the equation and solved the answer in a few seconds, and instantly received sighs and praises from other students. She was proud and took a look at Qin Hongfei, waiting for her admiring eyes and praise.

Qin Hongfei was looking forward to it, but she was speechless when she saw the final answer. She really shouldn’t have had such high hopes for her desk mate, who walked the dog but didn’t leash it.

Seeing that other students were suspected of being misled, she said in a low voice: “Li Xin, your answer is wrong.”

“How is it possible?” Li Xin retorted without thinking: “I remember what the teacher taught last semester, and you didn’t come last semester. You didn’t learn it at that time. How do you know it’s wrong?”

She felt that she was right and didn’t accept any rebuttal.

Qin Hongfei said because I knew the answer to this question was: “C5H10O5.”

For this kind of question, the answer should not be too simple to calculate, but her problem-solving thinking was straightforward, and junior high school knowledge required an equation.

Qin Hongfei asked for advice to know the equation, to avoid writing out an answer that does not meet the junior high school problem-solving standards. If she loses points because of this, it will be a loss.


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