3 List the information in the text under the headings Dos - Don'ts. Use must mustn't to tell the class.​

1.There is a great deal of difference in the phagocyte activity of cor­puscles concerning such substances as carbon and quartz particles, the former being ingested much more rapidly than the latter.
2. During the experiment the node and all efferent vessels were cleaned, care being taken to avoid trauma to the structures.
3. The heart is a double pump, the volumes expelled by the right and left ventricles being the same.
4. The experiment having been finished, we were ready to discuss it.
5. Diastole is the relaxation phase of the heartbeat, the atria and ventri­cles filling with blood.
1. Существует большая разница в фагоцитарной активности корпускул в отношении таких веществ, как частицы углерода и кварца, причем первые попадают гораздо быстрее, чем последние.
2. Во время эксперимента узел и все эфферентные сосуды были очищены с осторожностью, чтобы избежать травм структур.
3. Сердце - это двойной насос, причём объемы, выбрасываемые правым и левым желудочками, одинаковы.
4. Закончив эксперимент, мы были готовы его обсудить.
5. Диастола - это фаза релаксации сердцебиения, во время которого предсердия и желудочки, наполняются кровью.

There was a time, when birds couldn't sing. And suddenly they found out that in one distant country lives an old, wise man who teaches music. Then the birds were sent to him of the Stork and the Nightingale to check this out. The stork was in a hurry. He couldn't wait to be the first musician in the world. He was in a hurry, rushed to the sage and even the door didn't knock, didn't say Hello with the old man, and struggling shouted in his ear: — Hey, old man! Come on, teach me music!But sage decided to teach him a courtesy call.He took the Stork out of the door, knocked on the door, and said,: — It is necessary to do so. - All clear! - happy Stork. — This is music?  and flew away, eager to surprise the world with their art. Nightingale on their little wings came later.He knocked timidly at the door, said Hello, apologized for the concern and said that he really wanted to learn music. The wise man liked the friendly bird. And he taught the Nightingale everything he knew. Since then, the modest Nightingale became the best singer in the world.And the eccentric Stork only knows how to knock the beak. Yes still boasts and teaches other birds:  Hey, do you hear? You have to do this, like this! This is real music! If you don't believe me, ask the old wise man.