【正确答案】 C

【答案解析】[听力原文]15-18 W: Dr. Brown, the year 2001 is coming, and you are an expert with the UN Food and Agriculture Organization. Would you please tell us something about diseases recently spreading among animals? M: Animal diseases were reported recently in the Middle East, Africa and Europe. Some of the diseases are deadly. The UN officials give two reasons for animal diseases spreading. One is increased international trade in animals and animal products. Another is increased movement of people and animals from country to country. W: How can we prevent and treat diseases in animals? M: Well, No country can claim to be safe from animal diseases. Veterinary services are important to prevent and treat disease in animals. Recently, Rift Valley fever was the disease that has been reported outside Africa. W: Does Rift Valley fever kills human beings? M: Yes, it does. Rift Valley fever kills both animals and humans. Insects carry the virus that causes the disease. Rift Valley fever reportedly killed more than thirty people in Yemen last month. In Saudi Arabia, more than thirty other people died from the disease. W: How about the other animal diseases? M: Last month, foot-and-mouth disease was reported in South Africa; Kwa Zulu Natal Province. It was the first reported case of the disease there since Nineteen-Fifty-Six. Foot-and- mouth is an infectious disease caused by a virus. Early this year, Bulgaria and Italy reported outbreaks of bluetongue, a deadly viral disease of sheep. Bluetongue had never been found in those countries before. In August, Britain confirmed its first outbreak of swine fever since Nineteen-Eighty-Six. In just one month, thirty-five-thousand pigs were killed to control the disease.