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27.       (31231-!-item-!-188;#058&004411)


Plant scientists have used genetic engineering on seeds to produce crop plants that are highly resistant to insect damage.  Unfortunately, the seeds themselves are quite expensive, and the plants require more fertilizer and water to grow well than normal ones.  Thus, for most farmers the savings on pesticides would not compensate for the higher seed costs and the cost of additional fertilizer.  However, since consumer demand for grains, fruits, and vegetables grown without the use of pesticides continues to rise, the use of genetically engineered seeds of this kind is likely to become widespread.


In the argument given, the two portions in boldface play which of the following roles?


(A) The first supplies a context for the argument; the second is the argument's main conclusion.

(B) The first introduces a development that the argument predicts will have a certain outcome; the second is a state of affairs that the argument denies will be part of that outcome.

(C) The first presents a development that the argument predicts will have a certain outcome; the second acknowledges a consideration that weighs against that prediction.

(D) The first provides evidence to support a prediction that the argument seeks to defend; the second is that prediction.

(E) The first and the second each provide evidence to support the argument's main conclusion.

我觉得C有一个问题,however后面才应该是文章的真正观点,所以其实文章是认为转基因作物是可以普及的,那前面的 “Thus, for most farmers the savings on pesticides would not compensate for the higher seed costs and the cost of additional fertilizer“就不应该叫做是文章的预测(argument predicts will have a certain outcome)了呀,否则文章不就是前后矛盾的么; 而且,因为C说the second acknowledges a consideration that weighs against that prediction,而C的前半句说这个预测是文章做出的,所以C的意思是第二句是反对文章的,这不符合HOWEVER的作用啊??求教,谢谢!
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楼主确定黑体字部分标的没有问题吗?如果标在这两处,我怎么觉得答案都不对呢?

文章先提出一种技术进步,然后立即指出该技术进步的缺陷(黑题字1),接着说由于这个缺陷这种技术经济上不可行,最后再次转折,提出由于其他原因,这个技术还是会被广泛采纳的(黑体字2)

C选项对第一处黑体字的描述我觉得应该是在说文章第一句话的作用

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似乎lz对这句话的分解有些问题 a development that the argument predicts will have a certain outcome,它的意思是the argument predicts that the development will have a certain outcome。这句子里的development指的是genetic engneering而不是Thus那句话。

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