He finds his history book difficult to understand.,He h-找考题网

单项选择题

A. He finds his history book difficult to understand.
B. He has to read a lot of history books.
C. He doesn’t like the history course.
D. He has lost his history book.

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单项选择题

What is the main purpose of this article（）

A. To introduce different kinds of computer viruses and their harms.
B. To teach people how to guard against computer viruses.
C. To briefly introduce the history of computer hackers and viruses.
D. To compare the degrees of harms from various computer viruses.

单项选择题

Which of the following is NOT true about hackers（）

A. "Computer hacker" was once a neutral term.
B. The earliest criminal hackers steal people’s IDs and credit passwords.
C. "Hacker" is now a term for a programmer with criminal intent.
D. Some early hackers would employ low-tech tricks to get free calls through the US phone networks.

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