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[话童老师已改] 托福写作——[综合+独立][tpo34]麻烦了

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发表于 2018-4-17 00:02 |显示全部楼层
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Question:Summarize the points made in the lecture, being sure to explain how they challenge specific points made in the reading passage.The main idea of the professor was that we do not know what caused the distinction of the sea cow.

First of all,professor disagreed with the point of view of overhunting because of the size of the sea cow. Sea cow was a massive marine animal which was nine meters in length and ten tons in weight. Hence, it would take the native Siberian people a month to finish eating a single sea cow. What\\\'s more, the population of Siberian people were not high. So it was impossible for overhunting to be a reason for distinction.

Secondly, professor indicated that the distinction was not relevant with the ecosystems disturbances, which cause food shortage to sea cows, due to the other marine animals in the same area. If there were ecosystems disturbances, the whales in the same area might decline as well. However, the number of whales in the record was normal. Therefore, we could say that food shortage was not the answer we were finding.

In addition, professor stated that the distinction had nothing to do with the European fur traders. The reason of the professor was that the decline of the sea cows already existed for a hundred years when these bussiness men came to the island. So it had to be some other reasons made sea cows disappear before these trade men\\\'s arrival. If we could find the reason why sea cows\\\' number went down, we would find the reason.


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发表于 2018-4-19 11:32 |显示全部楼层
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发表于 2018-4-19 11:33 |显示全部楼层
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