XIX. Read Text d. Say about the influence of sleeplessness on the human organism: TextD

One of the scientific research institutes carried out an interesting experi­ment. Six young persons - four men and two girls did not sleep for 124 hours.

They were under the constant observation of the doctors who took their cardio­grams, determined the pulse and blood pressure and carried out many other investigations.

Not to fall asleep they were allowed to do physical exercises, dance and play, but they were not allowed to take any stimulants. Vision, hearing and various reflexes were often examined during the experiment.

The experiment was successful. Its findings showed that prolonged sleeplessness increased the amount of sugar in the blood, decreased the level (amount) of vitamins B, and B₆, produced considerable increase of white blood cells and decreased the amount of iron in the blood.

Lesson 23

HOME ASSIGNMENTS

Revision

I. Повторите правила чтения, способы словообразования, грамма­тические правила, лексический и текстовой материал цикла III (уроки

17- 22).

II. Прочитайте следующие слова:

few, quip, rale, most, quinsy, tissue, quite, delute, old, lunar, told, quiet, grew, question, exclude, true, cold, new, post

III. Прочитайте следующие слова, найдите в них суффиксы и префиксы и переведите эти слова:

estimate, separate, dislike, perform, decrease, infancy, significant, extensible, considerable, discover, abnormal, summarize, efficiency, weakness, academician, clinician, complete, exchange, organize, constant, cleanness

IV. Ответьте на следующие вопросы:

1. Назовите формулу страдательного залога группы Perfect. 2. Как переводится усилительная конструкция it is (was)... that (who)? 3. В чем заключается сущность правила согласования времен? 4. Какие придаточные предложения употребляются без союзов, и как они переводятся? 5. Какие формы инфинитива вы знаете?

V. От следующих глаголов образуйте инфинитивы в страдатель­ном залоге группы Perfect (письменно):

observe, find out, prove, accomplish, count, prolong

VI. Задайте вопросы к выделенным словам (письменно):

1. The treatment has been prolonged as the patient is still complaining of a general weakness. 2. The patient will have been sent to the X-ray examination

by the end of the week. 3. The number of red blood cells had been counted before the surgeon began the blood transfusion.

VII. Скажите, какой член предложения выделен и при помощи какой конструкции. Переведите эти предложения:

1. It was not until 1911 that a first really successful theory of atomic structure was developed by Rutherford. 2. It is on the large surface of the alveoli that oxygen passes from the air into the blood vessels. 3. It is per minute that the human being breathes in ЗОО-ЗЗО ml of oxygen and breathes out 225-250 ml of carbon dioxide. 4. It was not until Roentgen discovered X-rays that scientists were able to examine many inner organs.