填空题
英语三级B级
2010-09-26
How do you know that your computer is infected?
You know it by ____________________ your computer for virus with a software program.
参考答案
暂无
答案解析
本题答案:scanning。从原文you may think you have a virus,but how do you really tell? You scan your system for viruses with a software program可以得到答案。题干中scan作by的宾语,所以转化为scanning。