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单项选择题

"Somebody" in "somebody released some tigers" in Par

A．5 refers specifically to_________.A. Internet providersB. Internet usersC. routersD. hackers

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单项选择题At the end of the article, the author seems to suggest_________.

A．there is no solution to the flaw in the Internet technology
B．there is much worry within the academic circle about Internet security
C．US government is indifferent to the hacker attacks
D．Internet traffic is easily vulnerable to hack attacks

单项选择题Which of the following is NOT true

A．Serious flaw uncovered in a core Internet technology had attracted international attention.
B．The Internet is held together by the glue.
C．Normal Internet operations may survive the hacker attacks.
D．Hackers could attack computers without getting online.