Back to 90s she made a fortune from scientific research

Chapter 132 I know the answer to this question

Li Xin was called by the teacher to help her classmates, her small face wrinkled, but she still agreed, "Teacher, I will, Hong Fei, you can ask me if you don't understand, you haven't come for a semester, I don't know My grades have moved up a few places."

Although Qin Hongfei didn't have a good impression of her family dog, seeing her active and willing to help Yun, it seemed to outsiders that she hadn't come back for a semester. In fact, she returned to the classroom after a lapse of twenty years. , Don’t say it…there may be a lot of places that need help.

He readily accepted, "Thank you."

This exchange is quite pleasant.

The first class is homework. Qin Hongfei has no homework, so she familiarized herself with the knowledge in the new textbook. From Ph.D. to junior high school, it would be a bit hypocritical to say that the textbook knowledge is still memorized. up.

Parents who have long been forgotten are all gone, but if you forget them all, you can still remember them.

Even if you can't remember the knowledge points, it's no problem to interpret it for yourself a little bit.

Qin Hongfei familiarized herself with the few textbooks she had in hand, and suddenly she knew what she had in mind. Fortunately, the memory points were still there, and if she wasn't there, she could make up for it, and it was enough to use it.

There will be no problem if I promise the old lady ninety percent.

Flipping through it, she saw an equation and paused, this question...

Li Xin has been watching her all the time, knowing that she didn't study last semester, there must be a lot of things that she doesn't understand and need help, thinking of the teacher's instructions, she said a little arrogantly, "What's the matter, what don't you understand, I need to explain it to you. Can I borrow your homework? Let me tell you, if the teacher hadn’t asked me to lend you my homework, I would definitely not have borrowed it from you, no one else would have borrowed it, and my grades are all excellent!” She said in a smug tone.

Qin Hongfei really needed help, and Li Xin was willing to help, so she asked bluntly, "Well, there is something I don't understand, how did you solve the equation for this problem."

Li Xin looked at it, it was a chemical equation.

The teacher taught it last semester, but because he said it was taught by the bishop in the second half of the semester, he didn't talk much about it.

Ribose is an essential substance for human life. Ribose is known... After reading the questions, Li Xin immediately resembled the confidence of a student who has finished writing the test papers every exam, that I can get full marks in the test papers, "This question The teacher said it, I remember, let me count..."

Qin Hongfei was suddenly interested, and watched her do the calculations.

The other students were bored, so they came together. There were so many people, Li Xin had more face. He explained the equations and solved the answers in a few clicks. She was instantly sighed and praised by other students, and she was proud of it. , and directly showed it to Qin Hongfei, waiting for her adoring eyes and compliments.

Qin Hongfei was also looking forward to it, but when she saw the final answer, she was speechless. She really shouldn't have great hopes for her deskmate who walks the dog and doesn't lead the dog. Seeing that other students are suspected of being misled, With the friendliness of her classmates, she said quietly, "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, and you didn't learn it at that time, how do you know it's wrong?"

She felt that she was right and did not accept rebuttals.

Qin Hongfei said because I know the answer to this question is, "C5H10O5."

The answer to this kind of question should not be too simple to calculate, but her problem-solving thinking is straightforward, and junior high school knowledge requires an equation. Qin Hongfei just wanted to know the equation, so as not to write down the answer. If it meets the problem-solving standards of junior high school, if you lose points because of this, it will not be worth the loss.

(End of this chapter)