单项选择题


Questions 17 to 20 are based on the following talk on illegal trade in tiger and loss of its habitat. You now have 20 seconds to read Questions 17 to 20.
Why are parks established in Indian

A.To earn money from visitors.
B.To protect tigers from being killed.
C.To get tiger bone used in traditional medicine.
D.To get tiger skin for an increasingly affluent Asian population.
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