Normal saline, also known as sterile normal saline.

It refers to a sodium chloride solution that is commonly used in physiological experiments or clinically with an osmotic pressure that is basically equal to the osmotic pressure of animal or human plasma.

It contains 0.9% sodium chloride, which is not irritating and is very mild.

It not only plays a cleaning role, but also has certain disinfection capabilities.

This kind of trauma area on Ma Taotao's face can only be washed with normal saline, and it is absolutely necessary to use medical alcohol or hydrogen peroxide with strong irritation.

Liu Shoulin was shocked!

"Freefan, why didn't you go to study medicine at the beginning?"

"I really want to go to a medical university, but unfortunately I am not good at it. I can't get so many points and can't reach the admission score of a medical university."

"Then you can learn now, uncle can teach you step by step!"

"..." Lin Feifan was speechless.

Uncle, to be honest, your level of being a doctor is really poor!

I have heard of you as gastritis when a woman diagnosed her pregnancy reaction vomiting as gastritis.

"Uh, you are a teacher now, it's pretty good, you don't need to study medicine." Liu Shoulin suddenly understood, "You often come to me in the future, so we can discuss it more!"

"..." Lin Feifan smiled, shook his head, and said nothing.

Who wants to go to the hospital often? Who likes to run to the clinic?

Asking people to come to the hospital or clinic is equivalent to cursing people!

...

During the evening self-study time of Jinghu Junior High School, three evening self-study sessions are required.

The first and second classes of the second grade (first) class are held by Li Tuanjie.

But Li Tuanjie has not come to school yet.

The first class of the second class of junior high school (second) is Lin Feifan's second class.

Lin Feifan is preparing to organize the physics exams of two classes, one person invigilating two classes.

Five minutes in advance, Lin Feifan came to the teaching building with the test paper.

When I arrived at the door of the classroom of Class 2 (1) in junior high school, I found Jiang Yidan holding the teaching book and preparing for a lecture.

Seeing Lin Feifan holding the test paper in his hand, Jiang Yidan came over and asked, "Are you preparing for the exam? The Chinese teacher will be arranged for these two classes in the class schedule."

Lin Feifan said: "The Chinese teacher didn't come, so I wanted to borrow it for physics and take the exam together with Class 2. I want to compare the teaching effects of the two classes."

"I am the Chinese teacher!" Jiang Yidan blurted out.

Not only do I help with the daytime classes, but also help with the evening classes, and the service is very thoughtful!

All of them completely replaced Li Tuanjie.

"..." Lin Feifan was stunned and smiled, "Okay, I will take the second grade (1) class to take the exam tomorrow."

"A class takes the exam first, and another class takes the exam later, will the questions be leaked?" Jiang Yidan took a stack of test papers from Lin Feifan, "Okay, I won't teach Chinese classes in these two sessions, I'll give you the physics exam, I'll supervise you."

"That's really thank you!"

“How long does it take to take the exam?”

“90 minutes.”

"Okay, I'll give it to you after I'll collect the test paper."

...

When he walked to the door of the classroom of Class 2 (2) in junior high school, Lin Feifan found Fang Yongzhi walking into the classroom of Class 2 (3) in junior high school with a stack of test papers.

Hey! It happened to be the three classes taking the exam together tonight. Lin Feifan thought to himself.

This set of test papers was formulated by Lin Feifan. The comprehensive questions in Chapter 1 and 2 are very difficult to improve.

Lin Feifan spent a lot of time mimicking the test papers of three classes.

Lin Feifan did not agree on the exam time with Fang Yongzhi.

The course schedules and seat schedules of each class are very different. It is more troublesome to adjust the courses to the same time for the exam.

The first and second class of junior high school (third) is originally a math teacher.

The math teacher had something to do temporarily and asked Fang Yongzhi to serve as a classmate.

It was a complete coincidence that the three classes took physics together tonight...

After the exam, Lin Feifan walked out of the classroom door with the test papers and walked to the classroom of Class 2 (1) in junior high school, and found that Jiang Yidan had already collected the test papers and returned.

Li Minyao and Wang Jiaxin stopped Lin Feifan and pestered the answers to the last question of the multiple-choice question and the last question of the calculation question.

At this time, Yao Xiaodong had just walked out of the classroom door and wanted to go over and ask Teacher Lin the answer.

He found two girls surrounding Teacher Lin, and he shrank back.

Lin Feifan said: "If you choose C, there are two answers to the last question, 180 and 270, and you need to discuss them in two situations."

“Wow!”

"I'm right!"

...

The two girls jumped and jumped.

The sharp soprano almost broke the eardrum in people's ears.

"Oh hey! I can't stand it!" Lin Feifan sideways away from the two girls and quickly walks into the room.

Yao Xiaodong chased after him, "Cousin, what is the answer to the last question?"

Lin Feifan said: "There are two answers..."

"Oh, I get it!" Yao Xiaodong turned around and ran back.

"Hey! It's really good! At least three people got the last question right!" Lin Feifan said to himself.

The last question is a national junior high school Olympic physics competition question, which is quite difficult...

Back in the room, Lin Feifan chose the test papers of several students with good physics scores, and took out a red pen to prepare for correction.

Anyone who is a teacher likes to first correct students with the best grades.

Lin Feifan is no exception. He did this when he corrected the test papers in the first two times.

At this time, Jiang Yidan walked in with the test paper.

Jiang Yidan asked: "How do you plan to correct the test paper?"

Is there any different way to correct test papers?

This question made Lin Feifan a little confused, but he still replied: "I will correct a few very good grades first. This test paper is very difficult. I'm anxious to see how they did the exam."

Jiang Yidan said: "You cannot wear tinted glasses to correct the test papers, and you cannot correct the test papers with prejudice."

"..." Lin Feifan was even more confused, "How to correct it?"

Jiang Yidan put down the test paper and turned around and left the door.

Hey! Only half of the words are spoken, keeping the other half for one to think about it?

In the middle of the night, I also gave people some thought questions.

After a while, Jiang Yidan came back, holding a big newspaper clip in his hand.

Jiang Yidan sorted out the test papers, then clamped the left end of a whole stack of test papers with a newspaper clip, and the student filled in the name and the part of the class.

"Can't you look at the student's name during the correction process?" Lin Feifan asked.

Jiang Yidan nodded and said, "Yes, the scoring standards can be exactly the same. Every student's test paper must be carefully read without any personal feelings. The students' test papers can only be taken out separately when the face-to-face review is made."

"This method is good!" Lin Feifan sincerely exclaimed.

When I corrected the test papers in the first two times, I always took out the good grades and corrected them first.

Later, the more I criticized it, the less I became, the more angry I became.

The test papers of students with poor grades are indeed not as carefully as those of students with good grades.

For students with good grades, they will circle them and sometimes write a few words of encouragement.

For those with very poor grades, the test papers are all bad, and I am not in the mood to point out the reasons for the error.

Because the teacher’s mood when he corrected it later was really bad!

People are tired too.

If you can’t see the student’s name in this way, many disadvantages should be avoided.

Jiang Yidan said earnestly: "In every teaching link, we should treat all students equally. No one is good or bad! Every student deserves our respect and love for him!"

"Principal Jiang, I remember it!" Lin Feifan said with a wink.

I admire it very much!
Chapter completed!