A、8 years. B、16 years. C、20 years. D、30 years. C题目问Ethell教过多少年的少数民族学生，文章提到“I taught my minority students in my English and drama

After retiring from 30 years of teaching, Ethell Pepper could easily have decided to sit back and relax and enjoy a peaceful retirement. But that kind of life is not for Ethell Pepper. "I just wanted to do something different. If you are going to participate in life, do it. Don’t just sit down and look out of the window." She says. At 68, she decided to become one of the pioneer participants in a program at the University of California. The program offers campus housing and classes to people over sixty. She enrolled in a class called Human Relationships and a Diverse Society (26) . "I taught my minority students in my English and drama classes in high school for 20 years (27) . But in this course, I found out a lot about other cultures that I didn’t know them one of the most important lessons that I’m learning is to perceive, not to judge (29) ." Older adults can add to the educational resources of university by bringing with them a Jot of valuable experience (28) . Their presence on campus helps break some long believes on aging. Young students may have fears of growing old. But that kind of fear can be reduced as they see that older people can be alive, healthy, and continue to contribute to society. The younger students can begin to see aging as a natural part of living.