The requirements are as follows:

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In 1991, 1) Describe the imagination of the circle, 2) Write a speech on "those who are close to ink are black" or "those who are close to ink may not be black" to participate in the debate.

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We began to know the circle when we were in elementary school, and began to know some variables such as pi, but we should also know a lot of circles in real life, such as our most common water pipe, which is very useful, we didn't know it before, until we graduated from college, we didn't know the difficulty of finding a job, and it was also when we were looking for a job, we knew that there was a water pipe called Jinde pipe, and the advertising they did was Jinde Guan, listening to the meaning of the advertisement, it should be very big, but seriously, we were not interested, but due to the pressure of life, we had to go to the interview, and then go to training,But in the end, I didn't go to their company's activities for various reasons.,But such a thing is still fresh in my memory.,It's really a very special memory.,Speaking of circles.,I thought of such an advertisement.,I don't know the specific content.,Because the time is very long.,So I can only remember the words of this big headline.,But I still know something about water pipes.,Why are those water pipes made round? Because of the same material, made into a circle of large area, this is a very special personality, this is also the special thing of the circle, no matter what kind of thing, as long as it is the same thing, made into a circle to have a large capacity, so the water pipes are made into a round, that is, to increase the flow of water, but there are also some water pipes are made into a square, something, but there is no round convenience, is such a reason.

But when it comes to round things, there are really a lot of things, such as basketball that we always play, Volleyball, in fact, these are the same kind, when we were in college, we were the hardest time to practice these balls, in that moment, we have been practicing, sometimes the arms are bruised and purple, but the teacher is not distressed about us at all, and said that we exercise less, at the beginning are like this, it is caused by the rupture of capillaries, saying that after playing for a long time, it will not be red and purple, and that we need to exercise for a long time, other teachers are teaching students some calisthenics or something, but our teacher is like the embodiment of barbarism, he always says, you can learn if you want to, but I won't teach, What he has always emphasized is that when he was in college, he was a ball major, and he really couldn't jump for those aerobics or something, how do I know? We all believed it, because we had no choice but to do it, so let's just practice hard, he shattered all our good hopes, so we had to practice, but in the end we were really grateful to our teacher, although at that time, he told us that he couldn't do anything, so we had to practice according to what he said. But one semester after graduating from college, I think it should be the teacher who wanted us to graduate happily, he taught us aerobics and ballroom dancing for a semester, for us at that time, not to mention how happy, but he seemed to see through our hearts, we also seemed to see through his minds, he always said that he wouldn't, how could it be now? What is the reason for this? If he didn't lie to us, he must have found another teacher to teach him, he learned a little and taught us a little, so he taught us aerobics and ballroom dancing for a semester, to be honest, when I look back on the past, our four years of college were all doing some barbaric exercises, only in the last semester, the teacher taught us what we wanted to learn the most, but then I found out if the teacher lied to us? But I still prefer to believe that the teacher is not lying, we are villains. In that way, we can continue to maintain the glorious image of the teacher in our hearts, this image is too tall, we don't want to destroy it, we can only take it as a good memory, because the teacher must have done his best, and he has been fulfilling our wishes, so when we were in college, we were the most learned class, volleyball, football, Basketball has been learned, but our dearest ballroom dancing and aerobics have only been studied for one semester, maybe the teacher has given us a suspense, he must have thought so, if we are really interested, we have a lot of opportunities to learn these after graduation, there are many such training courses in the society, but basketball, football, volleyball, but only he taught us, so I am impressed.

Round, this thing, the application is really very wide, for example, we often use the wheel, in the past, everyone's living standard was very poor, they were all riding bicycles, and then there were tractors, and now there are electric cars, motorcycles, cars, some of these are all related to the circle, because the round is very smooth, the car is still very comfortable when it is spinning rapidly, if you use the wheel with a square or a rectangle, will your car still move? Can it still be driven? This is really a joke. So a lot of things have been updated again and again, all of them have changed their appearance, the teacup has a square, and there are some other things, all of which have a lot of shapes, only the wheels, which are always round, no matter how high-end your car is, no matter how luxurious your car is, no matter how expensive your car is, look at the wheels and know that they are all the same, all of them are round, so ah, I think there are a lot of things like round, and the money we usually use, steel hammers are often seen, but in the south, it is generally rare to see steel hammers, it may be that such a thing has a regional influence, We often use this kind of money here, heavier than paper money, we pick it up is still easy to be lost, so we don't like this kind of steel hammer very much, but recently I have found a lot of things that are not steel hammers, in our place there are a lot of tap water connection points, such machines are all to receive steel hammers, paper money don't want, haha, this is strange, I can have to change the paper money into steel hammers and then go to get water, and children always like to sit on those toys, the kind that can sing, I always call it"Joyful", oh, really, some of these toys, the machine is all made of steel, such round coins are used in this way, and those game machines that we often play, all of them are played with steel hammers, so there are still a lot of round things, there are a lot of round objects, of course I can't say enough, so the circle is also very widely used, I hope that in the future, the circle will have more uses......................