Ⅰ. 用本单元恰当的单词补全语境
1. contain lots of information 包含大量信息
2. the access to the mountain village 进入山村的通道
3. get the computer to crash 使电脑崩溃
4. a complex keyword 复杂的密码
5. log in the computer 录入电脑
6. a computer breakdown 电脑故障
7. the biggest source of information 最大的信息来源
8. a town accessible by rail 有铁路通达的城镇
9. millions of pages of data 数百万页的数据
10. a US defence organisation 一个美国国防组织
