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首先,小兔勿捞~~偶也写了25分钟……今天的听力记笔记很累有没有! 819 The professor is skeptical about the idea in the reading passages(passage) that the number of birds are reduced(这里用被动有点怪,the number 对应的应该是单数吧) by growth of human population and/, the increasing in agricultrue and the pesticide. In the lecture, she lists three main reasons.
First of all, in the reading, the increasing population and settlements of human cause the birds's natural habitats disappearing. On the contrary, the professor agures that actually there are better and larger habitats for birds due to urbanization. In addition, not all species are decreasing. Virtually, some people even complain about the increase of some species of birds, such as seagulls(厉害哦), pigeons.
On top of that, the professor refutes the claim in the reading passage that the agricultural activities result in the futher destrution on birds' habits. She points out that now the new and(不用这个and吧) more produtive crops are developed, and there is no need to convert more wilderness areas for agricultural use. SO the bird populations will not continue to deline.
Finally, although the reading passage suggests that the use of chemical pesticides will do harm to the food chain for birds where they can harm birds, the professor disagrees with this idea. She indication people become awareness of the disadvantages of using pesticides, therefore there are two changes in killing the pest. First, new and less toxic pesticides are invented, and second people are now developing a kind of crops which have genetic resitance(resistance?) to defense the pest, which can keep the stability of the food chain.
小兔的paraphrase能力很好哈,听力也很强,很多细节都抓到了。就是拼写错误有点小多哈 |
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