单项选择题

It is reported that the latest outbreak of the bird flu in Pennsylvania in the United States has prompted China to slap a ban on poultry imports from the state.

A．marine products
B．dairy products
C．industrial products
D．avian products
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单项选择题
Pirated compact disks and floppy disks remained the second biggest vehicle for the spread of computer viruses despite the governments' determined efforts to quash software piracy.
A．boost
B．prevent
C．crush
D．restrict
单项选择题
What is at fault in our present system is not the outcome but the fallible procedure.
A．sublime
B．erroneous
C．plausible
D．impeccable
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