21. Упр. 9. Прочтите и определите значение английских слов по их сходству с русскими эквивалентами.

22. Transport, process, plasma, function, person, structure, pneumonia, infection, protoplasm, vein, elastic, leucosyte, appendicitis, artery, capillary.

24. III

25. Упр. 10. Прочтите текст «The Circulatory System».

27. The Circulatory System

28. Part I

29. The life processes of an animal require to provide food and oxygen continually for the metabolism in its protoplasm and to remove wastes promptly. To do this the circulatory system serves for internal transport. Its essential parts are: 1) the blood which consists of fluid plasma and free cells or blood corpuscules; 2) the heart with muscular walls that contract periodically to pump the blood through the body; and 3) a system of tubular blood vessels through which the fluid is moved.

30. In all vertebrates the blood comprises plasma, white blood cells and red cells which serve to transport oxygen. The red cells total is about 35 trillion in a human being: each may live 25 to 100 days and make 50,000 or more circuits in the blood stream. The function of the red bone marrow is to produce red blood cells. Red cells are more numerous in infants and in persons who live in high mountains.

32. Vocabulary List

34. to provide

35. to protect

36. to dilate

37. to destroy

38. to pump

39. serum

40. spleen

41. marrow

42. amount

43. blood vessel

44. internal

45. circulatory

46. essential

47. markedly

48. promptly

49. Упр. 11. Найдите в тексте и прочтите вслух ответы на следующие вопросы.

1. Из каких основных частей состоит система кровообращения?

2. Из каких частей состоит кровь?

3. В чем заключается функция красного костного мозга?

50. Упр. 12. Ответьте на вопросы по-английски.

1. What is the total amount of the red blood cells in a human being?

2. What is the main function of the circulatory system?

51. Упр. 13. Прочтите и переведите текст «The Circulatory System».

52. Упр. 14. Найдите в тексте предложения, содержащие инфинитив, определите его функцию.

54. Home task.

1. Выучите теорию «Формы Инфинитива» (с. 126) и «Функции инфинитива» (с. 126-130) ¹.

2. Выучите Vocabulary List.

3. Прочтите и переведите текст «The Circulatory System» Part II, стр. 7.

4. Выполните письменно упражнения 15, 16, 17.

56. Упр. 15. Fill in the necessary words: be removed, pumps, consists of, protect.

1. The body wastes must ... promptly.

2. The blood ... plasma, white blood cells and red blood cells.

3. The heart ... the blood through the blood vessels.

4. The white blood cells ... the body.

57. Упр. 16. Translate the sentences using a dictionary.

1. Prevention is the best way to control the disease.

2. A thermometer is an instrument to be used to measure temperature.

3. There were many problems to be solved to understand this phenomenon.

4. Disinfectants work best when they and the surface to be disinfected are warm.

5. There are several more questions to be answered in this connection.

6. The purpose of mammary gland is to provide nourishment for the newborn mammal.

7. To prevent the effect of anesthesia the experiments were carried out after the section of the brain.

8. To understand the great work which he did we must know the conditions of the hospitals of those days.

58. Упр. 17. Translate into English.

1. Сердце сокращается ритмично.

2. Красные клетки крови переносят кислород.

3. Белые клетки крови разрушают бактерии.

4. Вены имеют тонкие стенки.

5. Во время инфекции количество белых клеток увеличивается.

6. Стенки всех кровеносных сосудов являются эластичными.