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3-14 综合
This reading passage mainly focuses on the application of genetically modified trees, which is the same as what the listening passage talks about. Whereas, the author contends that genetically modified trees can bring a lot of benefits to people, the professor disagrees with the argument posed by the author and gives three below points.
Firstly, the author thinks that genetically modified trees are more resistant than normal trees. The professor refutes that argument and raises an example: because of the mutation of average trees, one species of trees can still leave some survivals after a disaster. Rather, genetically modified trees have completely same genes, thus, they will be vanished away after a climate change or the attack of new pest.
Secondly, the writter thinks the farmer can benefit a lot from the plantation of genetically modified trees owing to the above-average characteristics of these trees. The professor denies that point and argues that the producer of these genetically modified trees will obviously charge more to these farmers. For instance, every tree the farmer plant will be charged for certain money.
Thirdly, the author contends that the spread use of these genetically modified trees can meet the demand of wood from the human being.
The professor holds a different opinion and contends that these new comers will grow uncontrollably and overcompete with other trees for resources such as sunlight, nutrition and etc.
In a nutshell, the professor uses three convincing points to butress his opinion and proves that the argument that genetically modified trees can benefit our human beings a lot is incorrect.
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