"An object moving along the X-axis has a velocity of V=10+2t², V: m/s, t: s. When t=0, the object is 20 meters to the right of the origin. Find the acceleration and position of the object at t=2 seconds. Let's ask one of our students to answer this question! Ding Yan! Physics instructor Xie Jianguo called out from the podium.

"Here!" Ding Yan stood up from his seat.

"Come, answer that question!" Xie Jianguo said.

"Report! I won't! Ding Yan replied in a loud voice.

"Ugh! Okay, sit down, Gong Jian! Xie Jianguo continued to call.

"Here!" A mature and loud voice sounded, and Gong Jian, who was sitting in the back row, got up.

"A=DV/DT, T=2, V=8m/S2(Ssquared), V=DX/DT, X(2) (parentheses 2 in the lower right corner) = 45.33M." Gong Jian presents the calculation method and the answer perfectly.

"Good! Yes, sit down. Xie Jianguo nodded and said.

"Yes!" Gong Jian replied and sat down.

"What Gong Jian said is the correct answer, now I will talk about its solution ideas... Xie Jianguo continued to speak.

For Gong Jian, Ding Yan has noticed it a long time ago, and remembered the news he saw when he first came to this world, only to completely realize that there are still characters in this world who I am a special forces series, and Gong Jian is still in school, that is to say, it has not yet reached the fourth company of sharpshooters, and there are still a few years before He Chenguang and others enlist in the army.

Besides, although Gong Jian has a good impression of Ding Yan, and still remembers the development of some special forces, the two have no intersection, and they are not in the same military region, and they are not in the same class, so Ding Yan didn't go on the pole to pull the relationship or anything. Now Ding Yan's goal is to improve his studies, graduate from the National Defense University safely, and then return to the armored regiment.

As for Gong Jian, he has been here for two years, and he is still looking for personnel for Fan Tianlei in addition to studying, but those who are too good are the treasures of the military region headquarters, and if they want to grab people in the hands of the military region headquarters, they have to go through the procedures of the General Staff.

But after a year, after continuous contact and understanding, Gong Jian is also very speechless, these people are not not excellent, but there are always some aspects that make Gong Jian feel inappropriate, and he will leave here in two years, at most to catch up with next year's batch, that is to say, Gong Jian can only find one of the people who will come this year and next year to give Fan Tianlei an errand.

"Xiao Ding! You don't know I'm going to be honest and straightforward! In the dormitory, Zhuge joked, the four of them are very familiar, and they are called a lot more casually, Zhuge is the largest, and the three are called brothers, Ding Yu Lao Ding, Ma Shu Lao Ma, Ding Yan Xiao Ding.

"But I really wouldn't! Fooling people? Ding Yan said helplessly.

"That can't be!" Ding Yu interjected, and then changed the conversation: "That's death!" ”

"Ahem, cough~" Ding Yan choked on Ding Yu's words.

"Next week's monthly summary exam, Xiao Ding, Lao Ma! You have to work hard! Zhuge reminded him.

"Hmm!" Ding Yan and Ma Shu nodded at the same time.

In the few days after writing it down, Ding Yan and Ma Shu began a crazy learning mode, memorizing words, memorizing formulas, doing exercises, and even memorizing answers.

。。。。。。

“？？？” Ding Yan looked at the math paper in front of him, and his heart was cold. The question is not much, just a positive, and then what? Fill in the blanks and answer the two big questions, there is no choice and judgment or anything, which makes Ding Yan have no chance to get the answer.

Fill in the name information, start to check one question at a time, I hope you can do it, question 1, this question feels familiar, how to do it? I don't know, the next one, huh! Or is it familiar, how to do it? Still don't know ... Until he finished reading it, Ding Yan had to give up the opportunity for treatment, and only one solution question was only written one-third of the solution steps, and he would not go down.

The head of the stage looked at the people around who were brushing and brushing the questions on the paper quickly, even Ma Shu was still writing with his head down, Ding Yan's heart was full of envy, no matter whether people answered right or wrong, it was also a kind of ability to be able to write math problems, Ding Yan's heart was full of frustration, and he felt that he was going farther and farther on the road of learning scum.

Next, what physics, chemistry, military management, etc., every volume, Ding Yan basically handed in a blank volume, and he didn't know how to do it at all, he looked very familiar, but he didn't know how to write.

"! Multiple choice questions? Ding Yan looked at the multiple-choice questions on the foreign language paper, felt that the whole sky was blue, and quickly browsed it, yes! I continue to give up treatment, and I still don't know what to choose.

"Phew!" Ding Yan rubbed his hands, and could only take out his housekeeping skills, muttering in his heart: Choose short if you are three long and one short, choose long if you are three short and one long, choose B if you are two long and two short, and C is invincible. But looking at the options are full of words, Ding Yan feels that this method can't be used, okay, let's see which one is pleasing to the eye.

The two-day monthly summary passed in Ding Yan's painful torture, looking at the paper and not being able to write, it was really tormenting, if this is the examination rules and regulations, Ding Yan will definitely fly and dance, which is like this, sit there, well, just sit there until the end of the exam.

Ding Yan is famous, really "famous", seven test papers, full score of 700, Ding Yan all add up to less than 60 points, it is an honor to sit on the "first" chair of military management, no one can shake it, it is Ma Shu, who scored more than 100 points in the exam, which makes Ding Yan very depressed.

"Tut-tut~~~ Xiaoding, you have 0 points in chemistry, 8 points in mathematics, and 12 points in physics. Gotta come on! Zhuge said next to him.

"I'm going to have to change my study methods, it's definitely not going to work like this!" Ma Shu said in a dull voice beside him.

"This learning method is very important, but everyone's learning ability and thinking are different, and the same method will show different results in different people, so you two have to find your own method." Ding Yu is very agreeable next to him.

"No! I said two top students, do you have to pay a piece of love for me and Lao Ma? Ding Yan asked, holding the geography book.

“！” Ding Yu and Zhuge shivered inexplicably.

"What do you mean by that?" Zhuge subconsciously covered his ass with his hand, and then shrank into the bed.

"Phew! I mean, you two have a good tutorial for our studies! Ding Yan said angrily, please, buddy is a serious straight man.

"Oh! That's it! Haven't we been helping you? "Zhuge leaned on the bed casually, fortunately he wanted to be crooked, if this is true... Neither can you give in if you are killed.

"I mean, I hope you two will teach you all the best, including your own learning methods, problem-solving ideas, and improving skills." Ding Yan explained.

"You're trying to deprive us of our last free time!" Ding's tone was filled with anger.

"Alright! What conditions! Ding Yan first turned his head to look at Ma Shu, and after Ma Shu nodded, Ding Yan said weakly.

"You will clean the dishes and chopsticks in the future!"

"You will wash all the clothes except for panties and socks!"

“。。。”

Ding Yu and Zhuge Yi's conditions popped out of their mouths one by one, making Ding Yan and Ma Shu's faces darker and darker.

After paying N unequal treaties, Zhuge and Ding Yu happily agreed to tutor the two full-time students, Zhuge Yi is responsible for Ding Yan, and Ding Yu is responsible for Ma Shu.

Slowly, Ding Yan and Ma Shu's grades began to rise steadily, including other officers who did not have good academic performance, they were also working hard, everyone who had passed their youth had already precipitated their minds, coupled with the transformation of the melting pot of the army, their own thinking had already undergone earth-shaking changes, in order to be able to graduate here smoothly and lay the foundation for their future military careers, no one was sloppy on this, and they were studying wholeheartedly.

。。。。。。

"What is the lateral and longitudinal movement of sediment in the coastal zone? What dynamics do they take place? What types of sedimentary landforms will be formed? Ding Yan looked at the last question on the geography test paper, thought for a while, and began to answer.

"When waves from the open sea come in an orthogonal direction to the shoreline, the sediment of the coast moves perpendicular to the shoreline under the action of the wave undercurrent, which is called the lateral movement of sediment. The external waves and the coast are obliquely intersected, and the resultant force of the wave force and the gravity force along the slope tangential force of the sediment in the coastal zone is not in a straight line, and the sediment moves along the direction of the resultant force of the two, and the longitudinal movement along the coast occurs while moving horizontally. ”

"They all happen under the action of waves. The sedimentary landforms formed by lateral movement mainly include: underwater accumulation terraces, underwater sand bars, offshore embankments and lagoons. The sedimentary landforms formed by longitudinal movement mainly include: concave shore beach, convex shore sand spitter, and island sand bar in the wave shadow area. After answering the question, Ding Yan breathed a sigh of relief, after half a year, Ding Yan was finally able to write on the test paper, it felt very good, how did he manage to sleep in class so confidently in his previous life? Can't figure it out.

"Hmmm! I guess I should be able to score 80 points this time! Ding Yan checked the test paper again, corrected the mistakes he found, and estimated the score in his heart.

"How?" Coming out of the examination room, Ding Yu hooked Ding Yan's shoulder and asked with a smile.

"There shouldn't be any problems this time!" Ding Yan's words were full of confidence, and the road of learning scum finally said goodbye, and Ding Yan's heart was also very comfortable.

"Old Ma, what about you?" Zhuge next to him turned his head and asked Ma Shu.

"I should be better than Xiao Ding!" Ma Shu thought for a moment and said.

Ding Yan rolled his eyes at Ma Shu, Ma Shu, a scumbag who is slightly better than himself, Ding Yan hated Ma Shu's condition that he never forgot to step on his own foot, but there was no way, who let himself never surpass him.

When the test results were announced, Ding Yan felt relaxed, except for the foreign language score of 78 points, the other subjects were above 80 points, the best was military management, this time the test scored 94 points. Of course, the overall score is still at the bottom, after all, everyone else is improving, and none of the people who come here are fuel-efficient lamps.