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3. Viruses can be written into the program and files, and can destroy the infected computers.

A. 对
B. 错

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4. You can dowhateveryou want overthe Internet, and the government can't handle theproblems.

A. 对
B. 错

If you can't take a correct attitude t the Internet, it will distract you from yourstudy, and you can get attitude to it.

A. 对
B. 错

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喜树分布于我国____流域及西南各省和印度部分地区,台湾、广西、河南等有人工栽培。