填空题

When people feel sick, doctors treat them. So, who treats animals Veterinarians are 1 . But they also protect human health.
Veterinarians are 2 against animal diseases that 3 . Diseases, like some kinds of bird flu, can spread to humans. Others, like 4 , cause economic damage.
Some veterinarians in the United States 5 . Some study diseases. Others work for drug companies and medical companies. And about half of all veterinarians care for more than one-hundred-million cats and dogs that 6 .
Becoming a veterinarian is hard work. Students take two years of 7 . They must learn in the classroom about animal biology, diseases, 8 .
Then, they attend four years in a college of veterinary medicine. There, students work in laboratories and treatment centers to 9 about animal health. They also learn to 10 .
There are twenty-eight schools of veterinary medicine in the United States. 11 study the subjects. Seventy-five percent of the students are women. About two-thousand new veterinarians 12 each year.
States give veterinarians 13 to treat animals. A veterinarian must take a test to receive a license 14 where he or she works.
A number of groups help veterinarians. The American Veterinary Medical Association is one of the oldest. It started in eighteen-eighty-nine. The organization 15 that teach veterinary science.
The 16 established the National Veterinary Accreditation Program in 1921. The program was designed to teach veterinarians how to work with 17 supervising animals raised for food. The program gives veterinarians 18 .
Veterinarians have always been important to 19 . They set broken bones, 20 , perform operations and help animals give birth. Many also are involved in the study of diseases that spread among animals.

【参考答案】

doctors for animals[解析] 1-20
When people feel sick, doc......

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