helped. Drawing on his research, Copeland plans to produce a Tarahumara grammar book in English and perhaps one in Spanish.

　　The idea to study the Tarahumaras came to Copeland in 1984 when he discovered that very little research had been done on their language. He got in touch with a Tarahumara Indian called Lornezo Gonzalez through a social worker who worked with the Tarahumaras in the border town of Juarez, Mexico. At first, Gonzalez was very reluctant to cooperate. He told Copeland that no amount of money could buy his language. But after Copeland explained to him what he intended to do with his research and how it would benefit the Tarahumaras, Gonzalez agreed to help and took Copeland to his village. "Over a period of a year our relationship became closer and warmer," says Copeland. "Thanks to him, the Tarahumaras started trusting us and understood what we were doing."

28. What can we learn about the Tarahumaras?

A. They have a strict education system.

B. They live a very simple and hard life.

C. They arrived in Mexico with the Spanish.

D. They are good at agriculture and architecture.

29. According to Copeland, learning Tarahumara _____.

A. is no easy task

B. is a waste of time

C. is very interesting

D. is useful for learning Spanish

30. Before Copeland learned Tarahumara, he had _____.

A. fully researched this language

B. read a Tarahumara grammar book

C. visited the Tarahumaras three times

D. asked a Tarahumara Indian for help

31. The underlined word "reluctant" in the last paragraph probably means _____.

A. ready

B. anxious