阅读部分需要提取的观点是:
- Main point: 三个原因导致鸟类数量减少
- Sub point 1: 人类居住地的增加
- Sub point 2: 农业用地的增加
- Sub point 3: 杀虫剂的使用
听力材料:
The passage claims that there will be fewer and fewer birds, but the arguments used to support this claim are unconvincing.
阅读文章声称鸟类的数量会越来越小,但是所使用的理由都是没有说服力的。
First, its true that urban growth has been bad for some types of birds, but urban development actually provides better and larger habitats for other types. So much so, that city and suburban dwellers often complain about increased bird populations seagulls at landfills, pigeons on the streets and so on. Even birds like hawks and falcons can now be found in cities, where they prey on the increasing populations of pigeons and rodents. So, its not going to be a story of uniform decline of bird populations in the future. Some populations may shrink, but others will grow.
首先,确实城市的发展对于一些鸟类是不利的,但是城市的发展事实上也为其他的鸟类提供了更大更好的栖息地。这样发展,城市的居民常常抱怨鸟类数量过多:堆填区的海鸥,大街上的鸽子,等等等等。甚至那些不常出现在城市里的鸟类,比如鹰类也出现在城市,这是因为他们可以捕捉数量不断增加的鸽子和啮齿类动物。所以,将来不会是所有鸟类的数量都在减少。有一些的数量在减少,但是其他的在增加。
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