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Pigeons have a natural instinct(天性) to go back home, even if they are very far away and the trip is hard or dangerous. Men use t
Pigeons have a natural instinct(天性) to go back home, even if they are very far away and the trip is hard or dangerous. Men use t
admin
2012-01-14
55
问题
Pigeons have a natural instinct(天性) to go back home, even if they are very far away and the trip is hard or dangerous. Men use this homing instinct to send messages(传言) on small pieces of paper which are fixed to the pigeons’ backs or legs. In war time, pigeons have been known to fly 75 miles an hour and to run 500 or 600 miles. These homing pigeons begin their training(训练) when they are about four weeks old. After a few weeks they begin flying and carrying messages. If everything goes well, they can work about four years.
Pigeons can be messengers (信使) for about ______.
选项
A、a few months
B、four weeks
C、four years
答案
C
解析
文中提到如果一切正常,鸽子们大概能工作四年。因此C为答案。
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本试题收录于:
公共英语一级B题库公共英语(PETS)分类
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公共英语一级B
公共英语(PETS)
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