第1题: [单项选择]Digital technologies really began to take form when ______. A. DVD technology was introduced B. it was used with photography C. used in computing D. information was encoded 参考答案:C 答案解析:[解析] 从题干中的take form when“成形于…之时”可以判断,此题考查的是digital technologies的起源。关键词digital technologies首次出现在第一段第三
第2题: [单项选择]
流脑密切接触者应医学观察 A. 1天 B. 2天 C. 3天 D. 5天 E. 7天 参考答案:B