听力原文:John's not from San Francisco, is he? (A) Once, with my parents when I was six, but I don't really remember it very well. (B) No, but he lived there for a couple of years. (C) He'll be there for the whole week. (37)
A.
B.
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【单选题】以下不是影响计算机系统速度变慢原因的是 _________ 。 A .开机启动时加载了太多的程序 B .桌面上创建了很多文档 C .电脑使用的是动态 IP 地址 D .系统还原功能启动关闭