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38.*Переведите предложения, выпишите сказуемые и укажите их
временные формы (Present или Past Perfect):
1. Some scientists had worked in the laboratory before they started their work at
the University.
2. Prof L. gave lectures at the Institute of Medical Sciences after she had visited
Strangeways Laboratory.
3. The aim of the report has been to give a review of the scientific work.
4. Dr N. studied in detail some enzymes that he had isolated.
5. They discovered some effect of pH that other workers had missed.
6. The use of this procedure has resulted in the discovery of some previously
unknown enzymes.
7. Researchers have described numerous trends in heart disease mortality and
morbidity and in the use of cardiac diagnostic and surgical services since
1968.
8. Pacemaker insertion rates have increased since 1970.
9. It is interesting to note that scientists have examined both heart and kidney.
10.Control studies that the scientists had used before didn't show the same
results.
11.It is necessary to mention the work of technical staff, some of them had
worked at the laboratory all their lives.
12.The growth of coronary angiography over the past two decades has increased
information on anatomic anomalies of coronary circulation.
13.A group of scienticts have examined the possible disadvantages of the
approaches in a large series of liver transplantations.
14.Dr N. examined some 100 patients whose cases he had followed.
15.Objective measurements have convincingly proved the hypothesis.
16.This hypothesis has attracted many followers.
17.We have concentrated our interest on the study of angina at rest.
18.The surgeon has always been an integral part of medical science.
19.The great advances in surgery have been dependent on medical discoveries
in other fields.
20.The use of blood transfusion, the control of fluid in the body and the use of
drugs for various symptoms have also aided success in surgery.