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您的浏览器不支持 audio 元素。
A.Listening to music.
B.Listening to CD players.
C.Watching TV.
D.Taking a bath.
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Banks, credit card companies, and investment’ firms are especially sensitive about revealing their vulnerabilities because they place too much reliance on ______.
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The passage is mainly about the increase of computer crimes in America and the difficulties in combating computer crimes.
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