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
Lynn Eldridge thinks there may be some truth in what Stewart says because ______.
A．organs containing plant extracts remain healthy indefinitely
B．dead bodies can be kept alive with transplanted organs
C．organs treated with certain plant juices revive dead bodies
D．extracts from certain plants help keep organs alive
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