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C. Change into questions supplying short answers.Example:  They have measured viruses.Have they measured viruses?1. Modem medical science has made great advances in the inves¬tigation of the causes of disease.2. The diseases of the mother have affected the developing em¬bryo.3. The smoking of two cigarettes a day has not retarded the normal growth of the foetus in the womb.4. Malaria has resulted in neither chronic ill health nor death.5. I have never had measles.D. How much ? or How many?Example:  She has two children.How many children does she have?1. They have a lot of test tubes.2. They can give me some information about cloned sheep.3. Peter has studied the congenital causes of disorders this semes¬ter.4. We bought a new microscope last week.5. Our laboratory has got lots of microscopes.6. Some deformities may be due to drugs taken during preg¬nancy.7. He knows a lot about chromosomes.8. She earns $20,000 a year.