2009 上海 第 75 题 单选题 区分题 2009_上海卷 75. B75. Which of the following can best summarize the main idea of the passage? A. With no Retriever, thousands of laptops are stolen every year.B. A new soft ware provides a means to reduce laptop theft.C. Retriever has helped to find thieves and lost computers.D. A new program offers a communication platform with the thief. 参考答案B ☆ 收藏不会，直接看解析查看原卷 →