单项选择题

Nightmares are mentioned in paragraph 1 in order to______.

A．give an introduction to the main subject of the text
B．give an example of one particularly vivid type of dream
C．provide a justification for the study of dreams
D．illustrate the value of analyzing dreams

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单项选择题

The main impact the Telecommunications Act of 1996 had on radio was to______.

A．give small radio stations spaces on the radio spectrum
B．cause irreversible damage to national radio
C．put pressure on local programming to conform to national standards
D．reduce diversity in radio programming

单项选择题

The underlined word flak (Para. 1) most likely means______.

A．opposition
B．anger
C．feedback
D．trouble