The lecture completely rejects the concern presented in the passage about the
decling decline of the birds' population because of the
human activities.In the professor's opinion, the arguments in the reading are unconvencing.
The professor contradicts the first point in the material that birds' natural habitats will shrinking due to the expanding human populations and settelements.She contends that because of the development of the urban
area,other kinds of birds
is are increasing such as seaguls and hocks.Some residents in urban even complain about the disturbing of the birds.
The speaker goes on to
opposite oppose the claim of the athor that the growth of agriculture will also
deprive the birds' habitats.On the contrary,she argues that nowadays people begin to use less and less lands for agriculture since the productivity of the crops have been improved ,which afford enough food for human beings and we no longer call for these areas.
Finally, the listening challenges the last viewpoint in the passage that the usage of chemical pesticides will do harm to the birds since they eat these poisoned insects.She reminds us that
,the traditional pesticides will be abandoned because people start to realize the negetive consequence.So there are two changes now,first people now start to apply new and less toxic pesticides.Moreover there is a trend for pestside
resident resistantcrops.All these reasons are good news for protecting birds.
没什么大问题，听得很准
敢问LZ是听为主还是一直记笔记呢？自己每次都听不准。。-- by 会员 sang824 (2012/5/17 12:23:57)
