单项选择题

A．He was a man full of responsibility.
B．He was a man of great strength.
C．He was a man of talents and idealism.
D．He was an eccentric man.
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填空题
A．confrontedB．commandedC．confinedD．committed
单项选择题
SATAN, a program designed by Dan Farmer, can be used ________.
A．to investigate the security of Internet sites
B．to improve the security of the Internet system
C．to prevent hackers from breaking into websites
D．to download useful programs and information
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