单项选择题

The word "staple" ( Line 1 , Para. 1 ) probably means "______".

A．big problem
B．tough job
C．important part
D．special item
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单项选择题
Which of the following groups is the author most likely addressing to
A．Disaster-relief agencies.
B．Consumers of news media.
C．News media managers.
D．Students of journalism.
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