1. Translate the following sentences, paying attention to the shape and Present Participle Past Participle.
1. Many experiments «are now beginning to throw more light on human illnesses.
2. While performing the experiments the researches supported the hypotheses.
3. Doctors use many drugs influencing malignant tumors.
4. Alcoholism is reaching epidemic proportions in some parts of the world.
2. Put the verb in brackets into the Present Perfect and translate these proposals.
1. I know London perfectly well. I (to be) there several times.
2. He is not unemployed now. He (find) a job.
3. She has a headache She (have) a headache since she got up.
4. Monica (give up) smoking recently.
5. Kate (to go) to the cinema two hours ago and she not (to come) back yet.
3. Select the correct form of the verb in the Past Indefinite or Present Perfect.
1. Linda has lost her insurance policy. Is the second time this ....
has happened happens happened
2. Where's the book I give you? What ... with you?
have you done have known knew
3. We're good friends. We ... each other for a long time.
know have known knew
4. Put the verbs in brackets into Present Simple Passive and translate into Russian proposal. Form negative and interrogative sentence.
1. The students (to give) a test on botany.
2. All things (to arrange) in an approximate order.
3. The age of a woman never (to ask).
4. A very rich harvest of fruit (to gather) every year at our farm.
5. Where the talks (to hold) next week?
6. This novel (to translate) in to Russian two years ago.
7. The plans proposed did not meet the requirements of our department
8. When subjected to high temperature, aluminum loses its strength rapidly.
9. The Lenin library holds first place in the world for its number of readers.
10. The atomic weight as seen from the table refers to that substance.
5. Read and translate the text in writing.
ABOUT NEW DEBATE OVER ASPIRIN
Government health agencies seems suddenly concerned about aspirin. Why this Interest In a drug that's been In wide use for more than half a century?
Aspirin is in the news because of two studies - one just getting under way by the National Heart and Lung Institute, the other being wound up by the Food and Drug Administration. Both stem from recent reports on just what aspirin does to a patient's blood. Present research indicates that aspirin - acetylsalicylic acid - stops or delays formation of the tiny solid particles called "platelets" that are in the blood.
Where is research likely to lead?
Hopefully, the Heart and Lung Institute study will determine once and for all whether aspirin really helps ward off the commonest form of heart attack.
The Institute is seeking to enroll more than 4.000 heart-attack victims in a program involving daily use of aspirin over a long period.
On the other hand, the In-depth study by the FDA will contain cautions against both the misuse and overuse of aspirin.
What evidence is there that aspirin acts against heart attacks?
Dr. Dale G. Friend of Harvard Medical School writes in Archives of Surgery: "Modern studies postulate that thrombi (blood clots) arc started, maintained and extended by platelet aggregation. Thus, such arterial thrombosis processes as peripheral vascular thrombosis (clotting in blood vessels outside the heart), coronary thrombosis and cerebral vascular thrombosis are at least to a certain extent a result of platelet aggregation ".