II. Answer the following questions:

1. What experience must a surgeon have in order to perform a delicate operation? 2. Why must we try to inhibit our negative emotions (feelings)? 3. What conditions for studying are the students of your Institute provided with? 4. Under what conditions is the work of the brain smooth? 5. What must one do in order to gain one's purpose? 6. What discovery of the 20th century was of the greatest significance for the development of science? 7. Why is quiet sleep of great significance for our body? 8. Does the blood pressure rise or drop in case of a considerable blood loss? 9. In what case is it difficult for a person to fall asleep? 10. What kind of diseases may spread quickly (rapidly)? 11. Where are the vision centres located? 12. What is the number of the nervous cells in a human being? 13. Where and how do the stimuli pass into the brain?

Lesson 23. Lab. Work 28.

I. Translate the following and check up your answers:

A. 1. значительное выделение жидкости; 2. зависеть от потери крови; 3. иметь место (происходить); 4. давать (кормить) легкую(ой) пищу(ей); 5. сообщить данные анализов; 6. проявлять большие умственные способности; 7. сделать правильный вывод; 8. вводить (закапывать) физиологический раствор; 9. обмен жиров; 10. глубина дыхания колеблется

1. a considerable discharge of fluid; 2. to depend on the loss of blood; 3. to take place; 4. to feed with light meal (food); 5. to state the findings of the analyses; 6. to show (to reveal) great mental abilities; 7. to draw a correct conclusion; 8. to drop physiologic solution; 9. the exchange of fats; 10. the depth of respiration ranges...

Б. 1. испытывать ощущение боли; 2. не быть в состоянии пошевелить рукой; 3. поступать непосредственно в кровь; 4. заснуть быстро; 5. успокоиться немедленно; 6. ровная (гладкая) боковая поверхность; 7. обеспечиваться необ­ходимыми книгами по медицине; 8. распространяться по спинному мозгу; 9. хотя это не имеет значения; 10. появилась сильная боль

1. to experience the feeling of pain; 2. not to be able to move one's arm; 3. to enter the blood directly; 4. to fall asleep quickly (rapidly); 5. to become quiet immediately; 6. smooth lateral surface; 7. to be provided with the necessary books on medicine; 8. to spread along (through) the spinal cord; 9. though it is of no significance; 10. a bad pain developed

II. Translate the following and check it up.

(Revision of all the tenses in the Active and Passive Voices)

A. 1. Я часто пишу письма своим родителям. 2. Сейчас я пишу письмо своему другу. 3. Я только что написал письмо своему другу. 4. Мне часто пишут письма. 5. Мне уже написали письмо.

1.1 often write letters to my parents, 2. Now I am writing a letter to my friend. 3.1 have just written a letter to my friend. 4.1 am often written letters to. 5.1 have already been written a letter to.

Б. Use the required tense of the verb corresponding to the given adverbials:

1. The doctor usually examines patients, (at present, yesterday, tomorrow at 5 o'clock, just, yesterday by two o'clock)

2. The researcher often carries out experiments, (yesterday from 10 till 12 o'clock, already, next week, by the end of the last week, tomorrow by the end of the working day)

1.... is examining... at present;... examined... yesterday;... will be examining... tomor­row at 5 o'clock;... has just examined ...;... had examined ... yesterday by two o'clock;

2.... was carrying out... yesterday from 10 till 12 o'clock;... has already carried out ...;... will carry out... next week;... had carried out... by the end of the last week;... will have carried out... tomorrow by the end of the working day.

HI. Translate the following and check it up.

(Impersonal and Indefinite Personal Sentences)

1. Без данных анализов бывает трудно поставить правильный диагноз.

2. Полагают, что больной полностью восстановит свое здоровье к концу лечения. Больному необходимо определить группу крови до операции. 4. Думали, что ему необходима операция на почках.

1. It is difficult to make a correct diagnosis without the findings of the analyses. 2. It is considered (they consider; one considers) that the patient will have restored his health completely by the end of the treatment. 3. It is necessary to determine the patient's blood group before the operation. 4. It was thought (they thought; one thought) that he required (needed) the operation on the kidneys.