单项选择题

A．People’’s health.
B．People’’s lives and futures.
C．The end of the world.
D．The Great Depression of 1929.
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单项选择题
By saying ... owners of well over half of all World Wide Web sites have set up home without fitting locks to their doors ( Line 3, Para. 2), the author means that ________.
A．many sites are not well-protected
B．those happy times appear still to be with us
C．there simply wasn’’t any crime to worry about
D．hackers try out tricks on an Internet site without actually breaking in
单项选择题
A．A visit to a prison.B．The influence of his father.C．A talk with some miserable slaves.D．His experience in the war between France and Austria.
A．A visit to a prison.
B．The influence of his father.
C．A talk with some miserable slaves.
D．His experience in the war between France and Austria.
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