When Lu Yuan said this, he was obviously staring at Bai Zifan. Everyone turned their eyes to Bai Zifan.

"This classmate looks like you have a plan. Please get up and answer this question." Lu Yuan said to Bai Zifan.

Bai Zifan didn't react at first. If Cao xiner hadn't turned him around, he couldn't have come back.

"The teacher called you." Cao Xin'er said in a low voice.

"Shua" baizifan stood up all at once.

"I don't know what the teacher is going to ask me?" Bai Zifan asked.

Lu Yuan frowned and was not happy, but he didn't say much. Instead, he opened his bracelet and projected a picture on the wall.

"In the wild, it takes a lot of energy to track a person. Strength is important, but observation is the most important part of tracking. And the question I want to ask you is what clues do you find in this picture?"

Bai Zifan glanced at the picture, then said faintly“ Looking at the footprints on the ground, there are different sizes and depths. I guess there are three people, one is an adult man and the other is a woman. The footprints of the woman are very small, but they are deeper than the footprints of the man. This shows that she must have heavy things on her body, and the woman will not leave them when she runs away. This shows that it must be for the children. "

"Well, if you said it was a child, why didn't the man carry the child on his back but let a woman carry it?" A man and a beast cried.

Bai Zifan shook his head and said with a smile“ Hehe, it's very simple. Because the man was seriously injured, he had no way to take the child with him. He had to give it to the woman. "

"How can you say that this man is injured? On your one side? Show me the evidence. " Meng Decai also cried out.

Bai Zifan looked at Meng Decai coldly and said in a cold voice“ Don't judge me by your stupidity. You are blind yourself

Bai Zifan's words undoubtedly offended many people in the dark. After all, many people didn't see where the problem was.

Even Lu Yuan felt that he couldn't keep his face at this time, but as a teacher, he couldn't be too obvious. Even if he didn't know, he couldn't be seen.

Bai Zifan pointed to one of the footprints and said“ You see, the footprints of the right foot are the same size as the footprints of the left foot, and the footprints of the shoes are also the same. In addition, there are no other footprints, which means that it is a person's footprints, excluding the possibility of other people's footprints, and the two footprints are one deep and one shallow, which obviously means that the person's footsteps are light and different. "

Lu Yuan heard the speech and looked at it. He found that, as Bai Zifan said, the depth was not very obvious, but he could still see it.

At this time, Lu Yuan also had other doubts in his heart and asked“ Since you said that the man was injured, how can you explain that if the man was originally lame? "

Meng Decai was overjoyed, and the look on Bai Zifan's face was ugly. He was more sure that Bai Zifan didn't think of this one.

"Ha ha, Bai Zifan, you have nothing to say? Tell me, why do you call him lame? "

Although Bai Zifan is sure that this person is injured, this is a kind of intuition, which he has never made a mistake, but now it is a bit of trouble to make it clear to these people.

"What? No more words? " Meng Decai was waiting to see Bai Zifan's joke.

Lu Yuan also stares at Bai Zifan and wants to hear his answer.

Bai Zifan looked at the image and pondered for a while. The corner of his mouth gradually curved“ You see, what's in the fifth footprint? "

"Blood?" Lu Yuan was shocked and said that he soon realized that he shouldn't have such a reaction. After all, he was a teacher. If he didn't answer the questions as well as the students, wouldn't he lose face.

Think of here, Lu Yuan just light said“ How could you find out? "

This tone is very similar to how you found out. People admire Lu Yuan a little.

"Yes, it's blood. Generally speaking, if it's on the body and hands, it will definitely spill the blood on the outside, but now the blood is inside the shoe print, so this person must be injured, and his foot is injured, so it will cause the blood to flow into the shoe along the thigh, and finally into the shoe print."

Bai Zifan's theory can be said to be reasonable and well founded, so people don't know where to refute it.

"Hiss! Your observation ability and reasoning ability are very strong, but it doesn't mean that this shoe print is his blood, or it may be the blood left by others. " There was a voice in the crowd.

At this time, people have not the previous kind of domineering, but a trace of inquiry.

Bai Zifan said with a smile“ I've also noticed the question you raised. You find that there is not a shallow pit about the size of a baby's fist in front of each group of footprints. This pit explains everything. This person is injured, so he still has a crutch in his hand. "

After Bai Zifan said that, everyone linked the clues together and found that it seemed to be true. Some people had forgotten their prejudice and gradually began to worship Bai Zifan.

"Hum!" Seeing that Bai Zifan had not been brought into the water, Meng Decai sat back with a cold hum.

At this time, a student asked Lu Yuan“ Teacher, is what Bai Zifan said true? "

Lu Yuan Leng Leng, a time do not know how to answer.

"The teacher doesn't know that, does he?" Some voices were whispering underground.

Lu Yuan's face became more and more ugly.

And at this time, a shadow came“ How can a teacher not know? In fact, my answer is not perfect, the teacher must know more details, but now I'm thinking about how to comment on my answer, just like marking a paper, right

Lu Yuan wiped the sweat on his forehead and gave a grateful look to Bai Zifan. Then he said“ That's right. Bai Zifan's answer is very clear and perfect. In the future, we must learn from Bai Zifan's observation, agility and insight. Do you know? "

"I see!" The crowd cheered.

Lu Yuanchang breathed a sigh of relief and had a good impression of Bai Zifan.

"OK, let's go on."

The courses at the end of the day are boring, even boring. They are all the most basic things. They are all valuable experiences from my previous experience in Africa.

Relying on these experiences alone, Bai Zifan has avoided many crises, which are all in exchange for his life.