Lanlan, do you understand?

Zhang Lanlan nodded.

"If you understand, then you can calculate the data I want you to calculate on the scratch paper now, because although I have completely analyzed this question, I can't solve the whole process, which is not beneficial to you, only by solving it yourself, you will have a deeper memory of this question."

If others answer for it, it will definitely not be as memorable as doing it herself, because through her own efforts, she will know every step well, but when she looks at other people's answers, she can't subconsciously remember such a question in her mind, and after a period of time, he will slowly become unfamiliar with this memory, and if the time is longer, it will be completely forgotten.

Therefore, Fang Chao just raised points, and as for the process of answering the questions, Zhang Lanlan still needs to do it himself.

"After calculating the escape velocity of the sun, then the absolute velocity of the spacecraft when it flies out of the gravitational circle of Mars is correspondingly obtained, then subtract the orbital velocity of Mars from this velocity to get the relative velocity, and you can derive the velocity of the spacecraft when it enters the orbit of Mars by deriving the answer to the second question yourself, and find the vector sum with the velocity of Mars...... The relative velocity of the spacecraft as it flies out of Mars can then be calculated. ”

"Oh, oh, good."

Zhang Lanlan picked up the pen and answered the questions on the test paper.

……

V+2Vm-2Ve3Vm-2Vm

……

Vm-2Ve0

By the inequality, Vb=Ve*0.185=5.5km/s.

"I also know the answer to the fourth question, which is 80%."

"Bingo, perfect~"

Zhang Lanlan is not stupid, after Fang Chao orally taught some internal skills, this cute girl who is not tall automatically completed the follow-up moves and created her own martial arts Xuangong, which is very powerful, and she is unique enough in this aspect.

Fang Chao was like a clear wind, and he was very proud in his heart as if he had taught Hu Chong to learn the Dugu Nine Swords.

Because this is Zhang Lanlan's own martial arts Xuangong, if he made a move, it could be more concise, omitting at least four steps, but he didn't do it, just to let Zhang Lanlan do it himself.

The teacher preaches and teaches to solve doubts, but he does not directly solve doubts without preaching.

The little girl was encouraged by the class leader and smiled.

"Class leader, after class, do you want to ...... together? Have a meal together? ”

However, the little girl was entangled for a moment, and the small voice Fang Chao didn't hear it at all, he had already completed his task, which was great.

After the incident, he brushed off his clothes and left merit and fame.

Zhang Lanlan buried her head in the textbook, she had no face to see anyone, did the squad leader reject herself, and she didn't give a response? What will other people think of themselves?

Ahhhh

Not alive~!

After teaching Zhang Lanlan, Fang Chao skipped class......

Next is the mathematics class, the difference between the problems and the problems is not particularly big, not to mention that the current mathematics teacher really has nothing to teach him, and his own level has improved, so that although the mathematics teacher with a higher mathematics education does not know where to teach Fang Chao, if the content is a little deeper, but except for Fang Chao, others are afraid that they don't understand it at all.

It's not that the math teacher looks down on other people, but who Nima is so perverted that she has already taught herself calculus and derivatives less than two weeks after the start of her sophomore year of high school, can this be a normal person? Compared to Fang Chao's current level, the math teacher believes that above the professional level, the other party may have surpassed him.

For Fang Chao, the difficulty of mathematics should be even more improved.

But this kind of thing shouldn't be said by him, a math teacher, Fang Chao is no longer a child, he is about to become an adult, and he can be responsible for his future.

He is only responsible for teaching the content of high school mathematics, and now Fang Chao has no problems in this regard, so he is free to develop.

Fang Chao found a quiet place after skipping class alone.

There is a tall banyan tree in the city No. 1 Middle School, there are often red strips of cloth on it, and the content written on it is either to study hard every day, or to love someone for a lifetime, the banyan tree testifies, this life is unswerving, if you violate this oath, the heavens and the earth will be destroyed...

So, this is an unreliable banyan tree, it is an unserious tree, anyway, the names of the two people hanging on it, there are basically not a few pairs that can be made.

Don't ask Fang Chao why he knew, because there were still a lot of words on the trunk that were carved with a knife about who was a scumbag.

The school strictly prohibits it, but this kind of thing, you can't stare at it 24 hours a day, people who are out of love, that is not rational, and anything can be done.

However, in this broad daylight, there is no need to worry too much about such things, and those who do such things are usually done at night.

Fang Chao seemed to see his name?

It seems like...... Really?

Fang Chao fixed his eyes.

Groove !!

Big scumbag Fang Chao!

“？？？？？？”

"Which shameless person did this? I've never been in a relationship, so you call me a scumbag? ”

"No, it's definitely not me, my name is so popular, and I'm not the only one in the whole school called Fang Chao, it's just that those Fang Chao are not as famous as me, besides, the words engraved on it are faintly a little old, it may mean that the seniors above me may not be able to say, it's not me, it's not me."

You see, is this something that people can do? Pushing their responsibilities away.

So Fang Chao glanced at it, and found that no one was staring at him, and the next moment he picked up a sharp pebble from the ground, and then quietly added the word 'yang' behind Fang Chao.

There is no trace of the destruction of the body, and the completely silent thing is to completely change the meaning of the whole sentence.

The big scumbag man is Chaoyang.

Who is Fang Chaoyang? Don't you know? Who is it?

Don't recognize?

Oh, that's right, it has nothing to do with Fang Chao anyway.

After that, Fang Chao threw the pebble to the ground, and it returned to the place that should have belonged to him, without knowing what a great thing he had just done, helping people restore their reputation and innocence, in the future, Fang Chao would 'become an immortal', and this stone might also be stained, and it was unknown what strange changes it could produce at that time.

Not far away, there are junior high school and high school students in physical education class, they are running on the plastic track, swaying the sweat of youth.

You see, there's a long-legged cutie in the distance... Her speed was so fast, so fierce, she was panting slightly, and finally entered the finish line at an astonishing speed, and there were exclamations all around.

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