22 What is the best title for this text? A The Discoveries in Physics.
B Marie's Family Life.
C Marie Curie: the Great Scientist.
D Marie Curie: the Early Years.

EXERCISE 6.  

Вставьте артикли, где это необходимо:  

1. Blood contains a fluid called plasma and cellular elements.

2. Erythrocytes (red blood cells) are important in (-) gas exchange taking place in (-) lungs.

3. Leucocytes (white blood cells) are subdivided into (-) different types.  

4. Granulocytes are formed in the bone marrow.  

5. Agranulocytes are produced in (-) lymph nodes and (-) spleen.  

6. Platelets are (-) tiny cells formed in the bone remaining after the coagulation process is the serum.  

EXERCISE7.  

Вставьте предлоги или наречия:  

1.Thrombocytes are necessary for blood clotting.  

2.The plasma is the fluid portion before clotting has occurred.  

3.There are two types of agranulocytes.  

4.Granulocytes are cells with granules in their cytoplasm.  

5.The number of leucocytes is from 4,000 to 10,000 per cubic millimeter.  

6.The oxygen is used by body cells in the process of converting food into energy.  

7. Carbon dioxide is expelled in the process of breathing.  

8. Erythrocytes transport oxygen from the lungs through the blood stream to the cells of the body.  

9.They also carry away a waste product of catabolism.

1. Do you mind my asking you 
2, I insist on doing it now, not tomorrow 
3.The lecturer began speaking on gas exchange in the lungs 
4.It’s no use trying it again 
5.He stopped doing laboratory experiments on blood coagulation
6.The lever of hemoglobin in your blood needs counting 
7.Most of us dislike the idea of being examined 
8.We had no difficulty in learning the blood formula 
9.Please go on speaking on the topic 
10.I can't help visiting my sister, who is ill 
11.The students made much progress in Physiology by learning this material