单项选择题

A Pike has, been observed to live, according to Gesner, as long as ______.

A．any other fresh -water fish
B．forty years
C．it has the help of the sun’s heat
D．two centuries
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单项选择题
In this passage it is alleged that a Pike has been known to attack anything alive except a(n) ______.
A．mule
B．wolf
C．otter
D．girl
单项选择题
According to the passage you have just read, it seemed that Edward Stewart was ______.
A．a trained surgeon
B．an expert botanist
C．a skilled electrician
D．an experienced craftsman
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