第18题: [单项选择]According to the passage, the Speech Machine's system was developed by ______. A. the telephone office B. a British company C. the Defense Research Agency D. the military service 参考答案:B 答案解析:[精解] 细节题。文章第一段第一行"A British company has come up with a system…"中的"…come up with a system…"与"…system