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Electronic version of mathematics textbook for grade three in primary school
There used to be such a horror story circulating in major schools.

It is said that there are unclean things in A school. Whenever the fifteenth day of the first month, Lu Xun's eyes will move at the school gate.

All the teaching buildings will be cut off.

The stairs will be changed from the original 13 level to 14 level.

The water from the laboratory faucet will turn red.

And the toilet at the end of 1 building. As long as someone goes in, they will never get out.

So a group of naive children made an appointment to explore on 15.

In the afternoon 12, they arrived at the school gate on time.

Lu Xun's eyes looked at the left, and when he dared not come out, he wrote down whether he had moved.

They came to the classroom and turned on the switch. Isn't it open?

"Deception." A boy complained.

"Look again."

Come to the stairs "1 2 3... 13, right?"

The children began to doubt the truth of the legend.

So they came to the laboratory again, turned on the tap and shiny water came out.

"Too boring! We came for nothing! "

At first, the excitement was eliminated by half.

At last they came to the toilet.

Although the girl said she didn't believe it, she still dared not go in.

So I let little C who just said he wasn't afraid go in.

Look at the watch 1 hour.

Two minutes later, the boy came out.

"Everything is a lie."

The children broke up in discord.

On the way out, a doorman found them and scolded them for staying at school so late. The children ran away.

Little B pays special attention to the stone statue at the door. Yes, his eyes still look to the left

"That's a lie," he muttered.

"Hello little b? Why hasn't Xiao C come back from going out with you last night? " The next morning, little C's mother called to ask.

Little c didn't go to school either.

The children vaguely felt that something was wrong.

So they told their teachers and parents about the adventure in the evening.

Everyone went back to that school accompanied by adults.

"What? Our portrait of Lu Xun always looks to the right. " The headmaster said strangely after listening to the children's stories.

"But we looked to the left when we came yesterday."

It really looks right when you go out. ...

"But there was electricity yesterday."

"There was a power outage in our whole area yesterday ... how did you turn on the light?"

"There are stairs!" The children ran quickly to the stairs.

" 1 2 3... 12?"

"Our stairs have always been 12."

"Impossible! ! ! "

"And the lab," a child warned.

"Go to the lab"

A group of people came to the laboratory. There was a dark red mark under the tap they turned on yesterday.

"It's blood."

"So ... Little C went to the toilet yesterday ..." Everyone felt scared.

"Let's go and have a look." The headmaster also realized the seriousness of the matter.

...

Push the door open. ...

Little C's body suddenly appeared in front of everyone.

Eyes wide with fear

The cut throat is bloody.

Internal organs were scattered in the dry pool. ...

"Ah ..." Little C's mother fainted on the spot.

Several teachers immediately rushed out to vomit. ...

Little b was shocked, too

Just a second before he passed out.

He caught a glimpse of little c's watch.

The pointer stops at 1. ...

At this time, Xiao C went in. ...

By the way, there was no doorman on the night of their expedition. ...