单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．Because schoolchildren waste time and money on them.
B．Because too many adults spend working hours playing them.
C．Because they can easily be turned into a form of gambling.
D．Because they are becoming a social problem, affecting both adults and children.
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单项选择题
A．Because of the loudness of the sound waves.B．Because of the fear of sea animals.C．Because of the fear of the confusion and harm caused by sound waves.D．Because of the noise of the experiment.
A．Because of the loudness of the sound waves.
B．Because of the fear of sea animals.
C．Because of the fear of the confusion and harm caused by sound waves.
D．Because of the noise of the experiment.
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