单项选择题

How many states in the U.S.A have been threatened by snakeheads

A．Three
B．Five
C．Four
D．Six
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单项选择题
According to Mr. Gilmore the spread of snakehead is ______.
A．based on legal means
B．by illegal means
C．in an Asian fish store's favor
D．out of economic consideration
单项选择题
What was the trouble with New York last month
A．It has a hard time getting immigrants to the city.
B．Some terrible creatures were discovered in Maryland.
C．The whole Maryland pond was poisoned.
D．Five big northern snakehead were found in Queens.
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