单项选择题

Consumers are not Supposed to threw used computers in the trash because______.

A．this is banned by the California government.
B．some parts may be recycled for use elsewhere
C．unscrupulous dealers will retrieve them for profit
D．they contain large amounts of harmful substances
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单项选择题
A．The long wait.B．The broken-down computer.C．The mistakes in her telephone bill.D．The bad telephone service.
A．The long wait.
B．The broken-down computer.
C．The mistakes in her telephone bill.
D．The bad telephone service.
单项选择题
A．All the passengers were killed.B．The plane crashed in the night.C．No more survivors have been found.D．It’s too late to search for survivors.
A．All the passengers were killed.
B．The plane crashed in the night.
C．No more survivors have been found.
D．It’s too late to search for survivors.
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