题目内容：
阅读短文，回答题：
What should you do to protect your computer from a virus?
You must make sure that you have an ________________________.
参考答案：
答案解析：
填空题：阅读短文，回答题：What should you do to protect your computer from a
- 题目分类：英语三级B级
- 题目类型：填空题
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What should you do to protect your computer from a virus?
You must make sure that you have an ________________________.