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[HANNAH KIWI老师已改] 托福写作——[综合+独立][TPO 26]

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发表于 2018-7-5 23:25 |显示全部楼层
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Question:Question: Summarise the points made in the lecture, being sure to explain how they cast doubt on specific points made in the reading passage.The listening explains that the point made in the reading is that the zebra mussels\\\' invasion cannot be stopped and create a serious problem to fish population is unconvincing. There are the following three reasons.

First of all, the people in the past cannot solve the problem that zebra mussel poses a serious threat to freshwater fish population is because they got less knowledge. The zebra mussels which attached the ship will be leaded to the soft water, which can kill the zebra mussels in immerdiatly.This directly disagree with the reading passage whcih says that the ship will help the zebra mussel to spread.

Secondly, the professor said that the beginning of reproduction is turely in a high rate, but it is just the beginning. Because, the birds which notice there are new fresh foods will change the menu right away. Which means that birds will take the zebra mussel as their new food.Agin this contradicts what is stated in the reading passage whcih believes that zebra mussels will not have the threat from their predators.

Thirdly, professor sait that zebra mussels take the plakton as food is not the awful situation for other fish in this part of water area, even it is a good thing. Because planktons is the main problem of the over-nutriens, which wil lead to a big trouble. Fish wonnot survive in the water with too much nutriens that there is a lack of oxygen.However, in the reading, the writer holds the opinion that zebra mussels might cause a decrease in the fish population in habitats where they will live forever.

All in all, the points made by the professor different from what the reading says.


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