第9题: [单项选择]{{I}}Questions 14 - 17 are based on the following passage about "Artificial Languages". You now have 20 seconds to read the questions 14 - 17.{{/I}}When did the first artificial language appear A. At about 1880. B. In 1887. C. In the 20th century. D. No one knows it. 参考答案:A 答案解析:[解析]文中提到 The first attempt at an artificial language was Volapuk,which appeared at about 1880.除A之外,