5. some kind of bird, 它经常nest的地方被economic development破坏，所以一开始数量下降，但过了1~2年后又增了。Why?
A. after the damage to local ecosystems, the ecosystem can soon restore significantly C. this bird can nest on road signs and xxx that have been built these years… E the development damages the living place of another animal, forcing them out in the open. And this animal is the food of the bird.
Which is the correct answer? A or E? Both make some sense, but which is better?
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发表于 2004-12-7 06:12:00
