2. 外语
  3. Before you download anything from the Internet, you should first of all ______. Why should you update your emergency disk befor

Before you download anything from the Internet, you should first of all ______. Why should you update your emergency disk befor

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问题 Before you download anything from the Internet, you should first of all ______.
Why should you update your emergency disk before installing a program?
选项 A、Because there might be a virus in the program.
B、Because installing the program might change system information.
C、Because an emergency disk is needed while installing the program.
D、Because the computer will start up again after installing the program.
答案B
解析 根据第三段最后一句“This is very important for downloads that change system information.”，可得出答案。
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