Cormplete the key phrases from the dialogue. Who says them? Then practise the dialogue with a partner. Помагите

Внешний видТело удлинённое, без конечностей. Длина тела от 10 см до 14,4 м.
От безногих ящериц змеи отличаются подвижным соединением левой и правой частей челюстей (что даёт возможность заглатывать добычу целиком), отсутствием подвижных век и барабанной перепонки, отсутствием плечевого пояса.ПитаниеВсе известные змеи — хищники. Питаются разнообразными животными: позвоночными и беспозвоночными. Существуют виды змей, которые специализируются на поедании определённого вида добычи, то есть стенофаги. Например, рачий уж (Regina rigida) питается почти исключительно речными раками, а африканские яичные змеи (Dasypeltis) — только яйцами птиц.
Неядовитые змеи заглатывают добычу живьём (например, ужи) либо предварительно умерщвляют её, сжимая челюстями и придавливая телом к земле (стройные полозы) или удушая в кольцах тела (удавы и питоны). Ядовитые змеи убивают добычу, вводя в её тело яд при специализированных ядопроводящих зубов.
Змеи, как правило, заглатывают добычу целиком. Механизм заглатывания состоит в попеременном движении правой и левой половинами нижней челюсти (змея как бы натягивает себя на добычу).appearanceThe body is elongated, without limbs. The body length of 10 cm to 14.4 m.
From legless lizards snakes differ movable joints of the left and right sides of the jaws (which makes it possible to swallow prey whole), no moving eyelids and the eardrum, the absence of the shoulder girdle.nutritionAll known snake - predators. They feed on a variety of animals: vertebrates and invertebrates. There are snake species that specialize in eating a certain type of production, ie stenofagi. For example, rachy too (Regina rigida) feeds almost exclusively on crayfish and Dasypeltis (Dasypeltis) - only the eggs of birds.
Nonpoisonous snakes swallow prey alive (eg, snakes) or pre sacrificed her, clenching jaws and pressing down the body to the ground (Coluber) or suffocating in the rings of the body (boas and pythons). Poisonous snakes kill prey by injecting poison into her body with the help of specialized yadoprovodyaschih teeth.
Snakes tend to swallow prey whole. Swallowing mechanism is alternately moving left and right halves of the lower jaw (the snake as it pulls itself extraction).
перевод

In our time, we are faced with a variety of problems. This drug addiction and alcoholism, and crime. Just our parents something sometimes hinder us in some families, we can face the problem of alcoholism or drug addiction, and not only among adolescents but also among roditeley.Ved we do not know how much we devoted to life, but not even try to live every minute, but only shorten our lives, ruining health. Among adolescents, we do not see any desire, desire to do something useful. Only a few of all want to leave their mark in history. How many now have teenage drug addicts, alcoholics, or simply criminals! It has become fashionable. Drinking, using drugs, smoking - it is "cool". And all this comes at the expense of classes in schools and universities. If all students before school, with few exceptions, were drawn to knowledge, to perfection, now the opposite: only a small percentage of students want to achieve something in their lives. They do not understand that this is very important. It is easier to just forget everything and live as you want without worrying about anything. The youth of today are very libertine. Yes, there were times in Russian history, when nothing happened, when the generations gone, leaving his mark on history. But they passed. And people are experiencing more difficult times. They did not have anything. And in our time is all you need for cognition and learning. But our young people do not want to use this chance. It simply ignores it. And this can not blame anyone. Just fell on those times. We can not, of course, say that teens are not to blame. No. They, of course, this is also involved, because they do not want to do anything. But they left its mark time. If, say, all of these modern technologies existed thirty years ago, the only God knows how many would have appeared scientists, artists. But I can not say that our generation is very much uneducated and lazy. No doubt there are people who still want to do something or are already doing something. But such people are, alas, units. On the one hand, this is only the beginning of life, but on the other hand, who knows how much we have been given to live. After all, if you remember the story, some sixteen years and has become well-known.