综合作文一篇，求高手们大概打个分！谢谢了！

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READING
污染导致海獭OTTER数量减少
1.
附近环境里有高量有毒物质
2.
其他动物比如海狮SEA LION数量也在减少，而他们的主要天敌orca通常吃更大的动物
3.
不平均的减少，因为有毒物质不平均。

LECTURE
听力反驳
1．
有毒物质没有效果，否则就会经常看到海獭的尸体
2．
是因为人类把大个动物捕杀了，ORCA才会吃海狮
3．
UNEVEN 因为环境UNEVEN, ORCA只在深海捕食，所以浅海的海獭没有减少

The lecture apparently refutes the points illustrated by the reading material. According to the reading, the population of otter declines because of the toxic water. On the contrary, the speaker contends a opposite stand that the reason cause otter’s death is actually predators, namely the orca. Doubt is cast on the points in the reading by the lecture in aspects below.

First of all, the reading indicates that the poison doesn’t virtually do harm to the otters, or we’ll be able to see dead otters more often than not. On contrary, the reading contends a opposite stand that the living environment of otters is highly concentrated with poison like heavy medal and exceeding Ph, and so on.

In addition, the speaker adopts another evidence that what cause the orca, that is mainly feed on big ocean animals such as toothless whales, in which case to prey on sea lions is the human’s over hunting on bigger animals. However, The reading states that sea lions also decrease in the area, and it can not because of the preying of orca.

Finally, the speaker raises the issue that the uneven decline of otter’s population is result from the orcas’ prey accustom. Orca only hunts in the deep sea because the preys are bigger there. This directly contradicts what the reading presents, namely the uneven location of the poison.


In conclusion, the contents of the reading is totally jeopardized by the lecture.