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[话童老师已改] 托福写作——[综合+独立][TPO 43]只有综合,老师辛苦了

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发表于 2017-10-13 01:18 |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 passage proposes three theories to reveal how the agonstids lived in the past. However, the speaker says that each of the theories has serious weaknesses.

Firstly, according to the passage, the agnostids act as predators, they hunt animals which are smaller than them. On the contrary, the speaker does not think so, she argues that almost all predators have large eyes to hunt small animals, but agnostids have tiny poor eyes, some of them are even blind. So if they want to chase preys, they must have some special organs to locate the position of preys. But according to the fossil record, they do not have this kind of organs.

Secondly, the author points out that they may settled on the seafloor. However, the speaker holds the opposite opinion that the typical primitive arthropods can not move fast, they move slowly on the seafloor, they usually stay in local place and occupy a small area. But according to the fossil records, agnostids could spread a large distance, so it is highly unusual that agnostids were settled on the seafloor.

Thirdly, the author asserts that agnostids are some kinds of parasites, which living on larger organisms. In contrast, the speaker stress the impossibility, to be more specific, she declares that the population of parasites not very large, if there are too many parasites, the organisms will die, but we are so pretty sure that the amount of agnostids are very large because the vast fossil in each organism.


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发表于 2017-10-13 09:51 |显示全部楼层
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发表于 2017-10-13 10:00 |显示全部楼层
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