Chapter 3 My family belongs to a fertilizer factory
"Hand in? Are you giving up on treatment..."
The black-faced teacher couldn't help but want to make a mockery, but his eyes fell on the test paper in Gao Fan's hand, but his gaze suddenly froze.
Hey, this paper is actually finished, and it doesn't look like random scribbling at first glance, but more or less organized.
"Let me see."
The black-faced teacher took Gao Fan's paper and looked at it carefully, with some surprise gradually appearing on his face.
"you……"
The black-faced teacher switched his gaze to the
Fan, I personally saw Gao Fan writing furiously on the test paper without raising his head. It didn't look like he was cheating at all.
As a senior middle school teacher, Teacher Blackface knows that it is impossible to achieve such a fluent state by copying cheat sheets during the exam. What's more, this is a chemistry competition, and the questions on the test paper cover dozens of different knowledge points.
, and took many detours. Unless Gao Fan had obtained the test paper in advance and asked someone to prepare the answers, even if he could privately bring two chemistry textbooks to the examination room, he would not be able to complete it perfectly within 20 minutes.
Exam papers.
"Since you know how to do it, why were you sleeping just now?" the black-faced teacher asked.
"Uh..." Gao Fan didn't know what to say. Could he say that the one who slept just now was not him but his ex, Gao Fan?
"It's really jet lag that hasn't come over..."
Gao Fan could only resort to nonsense again.
"I've collected the papers. You can't leave the classroom now so as not to affect other students."
The black-faced teacher glared at Gao Fan, then put the paper in his hand and said to the students in the entire classroom: "There are only five minutes left, please hurry up!"
"Dingxingxing!"
The sweet bell rang, and almost everyone in the classroom stopped writing and let out a sigh. I say "almost all" because it did not include those who were pinned down in their seats by the black-faced teacher.
Gao Fan. He firmly believed that the so-called not being able to leave the classroom after handing in the papers was just a punishment given to him by the black-faced teacher. The fact that his ex slept for 90 minutes was really a source of hatred.
"Hi, Gao Fan, how are you? Are you over the jet lag?"
After handing the paper to the invigilator and sitting in front of Huang Chunyan, the boy who had secretly raised his thumb to Gao Fan turned around, jumped in front of Gao Fan, laughed and repeated the jokes Gao Fan had used.
The concept of jet lag is not popular nowadays, but high school students have heard of it. When learning world geography in junior high school, it is inevitable to talk about jet lag. The teacher also said that foreigners need to overcome jet lag when coming to China.
.
Gao Fan came from Cangtang to Ruizhang and actually claimed to be jet lag. Such a joke can only be regarded as a very cold joke in the Internet era, but in this era, people rarely play jokes and the humor is very low. What boy did he do before?
He has been trying hard to hold back his laughter, but now that the exam is over, he can still hold it back.
Gao Fan recognized that this boy's name was Fang Rui. He was one of the four contestants from Cangtang No. 1 Middle School who came with him to participate in the semi-finals. He was also the top student in the second grade of Cangtang No. 1 Middle School who usually ranked among the top three in test scores. Gao Fan
Class 7, Grade 2, is the top class for Grade 2 students. The four contestants who came to take the exam this time are all in this class, so they are familiar with each other. Fang Rui usually has a very good relationship with his predecessor Gao Fan, and he does not feel that Gao Fan has any feelings for him at all.
I don’t mean to be friends with Gao Fan if my grades are not good enough.
Gao Fan was about to say something to Fang Rui when the boy sitting in front of him during the exam also turned back, but instead of talking to him, he went towards Huang Chunyan:
"Huang Chunyan, in the last experimental question, did the result appear blue precipitation?"
This boy is another one of the four contestants in Cangtang No. 1 Middle School. His name is Zhang Wei. His usual grades are quite good, and he can basically be ranked among the top five in his grade. Gao Fan remembers that he was training with the Huajing Team
During this period, and on the way from Cangtang to Ruizhang by train, Zhang Wei was looking for various opportunities to strike up a conversation with Huang Chunyan. Even if Huang Chunyan ignored him, he still enjoyed it.
From Gao Fan's perspective, this is a licking dog that has no place in the house.
In this era, the atmosphere of primary and secondary schools in tier-18 cities like Cangtang is still very feudal, and boys and girls basically do not talk to each other. However, this rule of not talking is limited to the daily environment of the class, like this
In a scenario where a group of people take a train to take an exam in another place, everyone will naturally lift the ban and even try their best to create opportunities to strike up a conversation to soothe their long-standing curiosity about students of the opposite sex.
Hearing Zhang Wei's question, Huang Chunyan, who was packing her stationery, did not answer directly. Instead, she turned to Gao Fan, blinked her beautiful big eyes and asked: "Gao Fan, why did you hand in the paper in advance just now? Listen to the invigilator,
You seem to have finished everything."
"I just drew a few random drawings and saw that there was no hope, so I submitted it in advance." Gao Fan responded modestly.
"Did you also do the last experimental question about adding ammonia water and copper sulfate?" Huang Chunyan asked.
"This is actually done." Gao Fan said, "Don't forget, my family works in a fertilizer factory, and I grew up smelling ammonia."
"So, what is the final result?"
"The final result should be a black precipitate. The sulfuric acid added first neutralizes the ammonia, and then the sulfuric acid is further poured in. The copper hydroxide becomes copper sulfate, and then hydrogen sulfide is added to generate copper sulfide. And copper sulfide is insoluble in water.
, a black precipitate is formed.”
"Ah, that's it..."
Huang Chunyan had a look of disappointment on her face, clearly realizing that she had done something wrong.
"Huang Chunyan, what Gao Fan said may not be right. The key point of this question is to calculate the ratio of ammonia and sulfuric acid. Who said it can neutralize it just right." Zhang Wei quickly comforted Huang Chunyan, not caring that Gao Fan heard this.
What will it feel like.
"Oh, is that right? Just go out and ask Teacher Wen and you will know. What are you in a hurry for? Come on, Teacher Wen is still waiting for us outside. Let's go." Fang Rui tried to smooth things over, and then did not wait for Huang Chunyan and Huang Chunyan.
Zhang Wei said nothing, so he pulled Gao Fan out, smiling as he walked: "Hehe, Gao Fan, I didn't realize in the past that you have such a sense of humor. I must tell everyone about the jet lag when I get back.
Guaranteed to make everyone burst into laughter."
Everyone walked out of the classroom, and a muscular man in his forties rushed over. He had a shaved head and wore a Chinese tunic suit. He looked like a typical middle school teacher. Seeing the four students, he couldn't wait to ask:
"How's it going? How did you do in the exam?"
Gao Fan recognized that this person was the leader of their trip, Wen Xiaojian, director of the Chemistry Teaching and Research Office of Cangtang No. 1 Middle School. He was about to answer, but saw Wen Xiaojian's eyes only passing quickly over other people, and finally stopped at
On Huang Chunyan’s body:
"Huang Chunyan, I heard that the questions were very difficult. Have you finished them all?"