Make up special questions to the following sentences: 1) Agriculture plays an important role in the development of our country. 2) Specialization and concentration are increasing in animal husbandry. 3) The tasks set for the veterinary science today are to increase animal productivity, to reduce death rate in animals, to make prophylaxes of animal diseases. 4) Animal diseases cause great damage to the herds of cattle. 5) Vaccination of animals against infectious diseases is a specialized type of work in which veterinarians may be engaged. 6) The duty of the veterinary doctor is to prevent infectious and noncontagious diseases, to treat sick animals, to control the quality of meat, milk and eggs delivered by farms.