求互改+TPO21综合写作

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The professor questions the statement in the reading material by attacking three main points in the passage accordingly. That is, whether the possibility of the survival of genetically modified trees is greater than that of the natural trees, whether planting genetically modified trees is more profitable and whether they could function as guards of their unmodified counterparts.

First, the professor points out a logical error in the article, that genetically modified trees can resist one specific condition is not equal to high survival rate. She furthers her opinion by elaborating that the genetic construction of natural trees are various so that one extreme condition would not kill all the natural trees while the uniform genetically-constructed trees might be wiped out by one specific situation. This drastically conflicts with the first point of the reading material.

Second, the idea that planting genetically modified trees could bring more benefit to the tree farmers is challenged. The professor presents the fact that the farmers have to pay much more for this kind of seeds and continuous payment for each time they plant add financial burden to the farmers. In this way, the professor implies that this cost outweighs the benefit due to faster growth and more yields, so that the conclusion contradicts with the point made in the passage.

Finally, the professor denies the idea that genetically modified trees can protect wild trees as they would not be overexploited. On the contrary, they will do a lot of damage as they grow aggressively and will outcompete natural trees for sunlight, water and other resources. What’s more, their fast growth would cause overcrowdness which aggravates the living condition of natural tree. All these points differ far from the points made in the forth paragraph of the passage.