Упражнение 48

А. Проанализируйте структуру сложно-подчинённых предложений. Найдите ядро в главном и прида­точном предложениях, а также определяемое сло­во в главном предложении, к которому придаточ­ное определительное присоединяется бессоюзно.

Б. Переведите предложения.

1. The tar in cigarette smoke can produce cancer in any tissues it comes in contact
with, such as the mouth, the throat and the lungs.

2. Changes in the amount of a hormone secreted result in stimulation or depression
of activity in the organs and tissues they affect.

3. A fetus obtains the water, organic nutrients, and electrolytes it needs from the
maternal circulation.

4. Many muscles are attached to the bones they move by a narrow strip of dense
connective tissue called a tendon.

5. Blood returning to the heart is pumped by the right side of the heart into the
lungs, where the carbon dioxide it has collected in the body is exchanged for
oxygen.

6. The pituitary gland is the most important gland in the body because the hormones
it secretes control the functioning of the other glands.

7. The size of the stomach varies with the amount of food it contains.

8. When an artery is completely blocked, the tissues it supplies rapidly undergo
degeneration and die.

9. One of the most important tools scientists use to study cells is the microscope.

 

10. The kinds of proteins a cell makes largely determine the nature of the cell.

11. Mitochondria produce almost all the energy the cell needs to live and do its
work.

12. One nerve fiber may supply from one to 200 muscle fibers, depending upon the
type of work the muscle is called upon to perform.

13. Like any other muscle, the heart needs a supply of oxygen in proportion to the
work it is doing, and the supply depends on the rate of flow in the arteries.

14. The proteins the cell needs in order to grow, repair itself, and perform hundreds
of chemical operations are made on the ribosomes.

15. The time it takes for blood to complete a single circulatory cycle is highly variable
among species but tends to be much longer in invertebrates than in vertebrates.

16. The anatomical atlas by Galen ['geilan] (130 — 200 A.D.) was used by medical
students during the Middle Ages mostly to memorise the astrological signs they
believed ruled each body part.

17. The organs and systems of the body vary greatly in quantity of blood they require
at different times.

18. The seriousness of rheumatic fever lies primarily in the permanent damage it can
do to the heart.

9.5 Придаточные предложения времени