单选题
Why are horses used to catch the electric eels?
A、
to frighten the eels.
B、
to exhaust the eels.
C、
to attract the eels.
D、
to stir the water.
【正确答案】
B
【答案解析】
[解析]由第四段中的“The horses are less affected than a man would be，and when the electric eels have exhausted themselves，they can be caught without danger．”可知答案为B。故应选B。
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