本帖最后由 laotaitai 于 2012-5-30 12:31 编辑
TPO 10 综合
The reading passage and listening passage debate on which is the main factor that cause the declining of sea otter, the pollution hypothesis or the attacking by predators. The reading passage outlines three different aspacts to support it opinion that the reason comes from pollution, which are contradicted by the listening passage, the professor support the opinion that predator is the main cause.
First of all, the reading passage holds that it is beacuse the oil rag and other industrial pollution along the Alaskan coast leaded to the death of sea otters. On the contraray, the listening passage claims that it is hardly for people to find dead sea otter along the Alaskan coast, becuase pollution is not the main reason. May be it is due to the predators that cause the sea otter directly. Apparently, this view is just the opposite of the writer's.
Second, the writer argues that pollution affects the entire ecosysterm rather than a single species, because other sea mammals such as seal and sea lions are also decilining. However, in the listening passage, the professor holds that it is not beacase of the pollution, but owing to the hunting of human being cause the sea otter decreasing, so, some sea mammals had to change diet. That is the main reason cause the declining of sea lions and seals. That is, this point is right contrary to the reading.
Finally, the writer demostrates that the uneven pattern of otter decline indicates that the pollution is the crucial reason, while in the listening passage states that just becasue of the uneven pattern of otter pattern claims that the pollution is not the main cause, and the location discloses that otter do not decrease greatly in the shallow water beacuse the predaors can not survive in those places. By this way, the lecture contradictes the reading passage. |