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【OG20-P569-635題】

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. Accordingly, 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 arguments 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, according to the argument contributes to bringing about that outcome

C. The first presents a development that the argument Predicts will have a certain outcome, the second acknowledges a consideration that tends to weigh 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 arguments main conclusion

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答案：

第一句話(huà)

Plant scientists have used...是之前的做法，第二句話(huà)Unfortunately反駁了之前的做法，第三句話(huà)accordingly得出一個(gè)相應(yīng)的結(jié)論，第四句話(huà)however又反駁了第三句話(huà)，最終結(jié)論為第四句話(huà)。問(wèn)第一句和第三句的作用。

A.錯(cuò)，第二個(gè)boldface不是主要結(jié)論。

B.錯(cuò)，第二個(gè)boldface并不是contribute to 最終結(jié)果的。

C.對(duì)，第一個(gè)boldface展現(xiàn)了一個(gè)development，整個(gè)argument預(yù)測(cè)它將會(huì)有一個(gè)確定的結(jié)果；第二個(gè)boldface承認(rèn)了一個(gè)consideration會(huì)反駁那個(gè)預(yù)測(cè)（即最終結(jié)論）。

D.錯(cuò)，第二個(gè)boldface不是那個(gè)prediction。

E.錯(cuò)，第二個(gè)不是evidence。