六级练习2013.02.06 long, world, easily, people, map

Rebecca949

There are thousand of pigeons in any big city in the world. (1) __________________________________? Just how pigeons find their way home is a bit of mystery. Some people think that they use landmarks that is the pigeon knows what the land is like from the air and it uses this like a map. (2) _______________________________________, which can easily be seen from a long way off. Other possibilities are that pigeon use the position of the sun to work out directions or that they have some kind of built in compass. (3) ____________________________________ but they still aren't to sure how pigeons find their way home. It seems likely however that pigeons like airline pilot use a number of different methods to guide them on their long distance journeys. Perhaps, one day we'll learn their secret.

本帖隐藏的内容需要回复才可以浏览

susan.sui

but do you know that this common bird is able to find its way home from even hundred kilometers away.
a landmark in Sydney for example is the Opera House
for quite a few years now, scientists have been carring out experiments on homing pigeons.

jkm204

But do you konw that this common bird is able to find its way home from even hundreds kilometers away.



In landmark in Sydney for example is they up house


For quite a few years now,scientists have been carrying out in experiments on homing pigeons