II. You are examining your patient's oral cavity. Ask the patient to perform thefollowing.

1. To open his mouth. 2. To show his aching (infected) tooth. 3. To show his other teeth. ///. You are treating an aching tooth.

a) Tell your patient that it is necessary to:

1. Clean the cavity of the tooth. 2. Put arsenic in this tooth. 3. Put in a temporary filling. 4. Put in a permanent filling.

b) Ask your patient:

1. To open his mouth wider. 2. To sit calmly. 3. To water his mouth. 4. To spit out. 5. To close his mouth.

Exercise 14. Read the text and translate it.

Dental Calculus

Dental calculus must be removed, otherwise the teeth quickly get spoiled. Tartar deepens the periodontal pocket where food particles accumulate and the mucus of microbe-saturated dental deposit is trapped. One milligram of dental deposit from uncleaned teeth contains about 8 million different microorganisms. They include pathological ones that can cause gingivitis -inflammation of the gingival tissue. The gums begin to bleed and bad breath appears.

Tartar cannot be removed with needles, pins or other pointed objects, because the enamel is thus ruined, the gum is injured and the wound gets infected.

After the dental calculus is removed by a dentist, hygiene should be scrupulously observed, because tooth care and tartar formation are directly related: neglected teeth are often affected. The mouth must be rinsed after each meal. Eating green vegetables and fruit is beneficial "exercising" for teeth. Thorough chewing of the food helps to clean the oral cavity, improve gingival blood supply and strengthen the gums.

II. Grammar Exercises

Exercise 1. Group the words according to the parts of speech, mind suffixes; translate them.

English, prepared, orally, prescription, manufactured, prescribed, indicated, polish, indication, intravenously, usually, injection, impure, chemist, unprotected, administered, tradition, information, pharmacist, selected, independent, nonnarcotic, translation, dangerous, variously, feverish.

Exercise 2. Group the words according to their roots and translate them into Ukrainian.

Produce, effect, medicinal, manufacture, prescribe, dose, independent, production, effective, medicine, productive, manufactured, dependent, prescription, productivity, medical, effectively, prescribed, dosed, depend.

Exercise 3. Find the predicative and name its tense and voice.

1. The centigrade scale is universally used in scientific work. 2. The weighing room of the chemical laboratory is equipped with a set of balances. 3. Reagents for experiments will be supplied in various boxes and bottles. 4. Synthetic and natural substances are easily dissolved in alcohol. 5. His lectures on physical chemistry were listened to with great interest. 6. Mendeleev's Periodic Table was much spoken about in the second half of the nineteenth century. 7. Students are paid scolarship once a month. 8. The lecture was followed by an interesting discussion.

Exercise 4. Make the following sentences interrogative and negative.

1. It's always cold in January.

2. It was simple to translate this paper.

3. It was warm yesterday.

4. It'll be interesting for you to work at a hospital.

5. It'll be easy to find his brother.

6. It's difficult for him to operate five times a week.

7. It rains in autumn.

8. It rained all day long yesterday.

9. It's raining now.

10. It was raining at two o'clock yesterday.

11. It'll be raining very often soon.

12. It's going to rain.

Exercise 5. Change the underlined words with corresponding substitutions where it's possible.

1. This English text is too easy for me. Please give me a more difficult text.

2. My sister speaks English better than I speak it.

3.1 don't like these pictures. They are too dark. I saw better pictures in a shop. 4.1 think this operation will be easier than the last operation.

5. His work is more important than your work.

6. This case is less interesting than the case we discussed yesterday.

Exercise 6. Translate into English.

1. Зараз іще дуже рано обговорювати це питання. 2. Зима. Досить холодно. 3. Узимку важко вставати рано, тому що вранці ще темно. 4. Моя сестра знає німецьку й англійську, тому їй легко вивчати французьку. 5. Вам важко йти? Давайте візьмемо таксі. 6. Дощ уже йде? — Ні, але скоро піде. 7. Сьогодні вранці ще йшов сніг, а зараз іде дощ. 8.1 не дивно, що мій брат так швидко одужав, — він дотримувався інструкцій лікаря.