Isabel Crook, a China-born daughter of Canadian missionaries who became one of her adopted country’s most celebrated foreign residents, beloved as an educator, anthropologist and articulate advocate for the Communist state, died on Sunday in Beijing. She was 107. Her son Carl Crook said the cause of death, in a hospital, was pneumonia. Mrs. Crook was among the last of a generation of Westerners born to missionaries in China in the decades before the Japanese invasion, World War II and the subsequent Communist revolution. The experience defined them. Some, like…