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1、专项提能计划专项提能计划阅读理解（三）阅读理解（三）科普类科普类(2011高考陕西卷高考陕西卷D)Ever since they were first put on the market in the early 1990s，genetically modified (GM,转基因转基因) foods have been increasingly developed and marketed in many countries in the world，mainly on the basis of their promise to end the worldwide food crisis.B
2、ut can GM technology solve world hunger problems? Even if it would，is it the best solution?Despite what it promises，GM technology actually has not increased the production potential (潜力潜力) of any crop.In fact，studies show that the most widely grown GM crop，GM soybeans，has suffered reduced productivi
3、ty.For instance，a report that analysed nearly two decades of research on major GM food crops shows that GM engineering has failed to significantly increase US crop production.Something else，however，has been on the rise.While GM seeds are expensive，GM companies tell farmers that they will make good p
4、rofits by saving money on pesticides (杀虫剂杀虫剂)On the contrary，US government data show that GM crops in the US have produced an overall increase in pesticide use compared to traditional crops.“The promise was that you could use less chemicals and boost production.But neither is true，” said Bill Christ
5、ison,President of the US National Family Farm Coalition.At the same time，the authors of the book World Hunger：Twelve Myths argue that there actually is more than enough food in the world and that the hunger crisis is not caused by production，but by problems in food distribution and politics.These in
6、deed deserve our efforts and money.Meanwhile，the rise in food prices results from the increased use of crops for fuel rather than food，according to a 2008 World Bank report.As a matter of fact，scientists see better ways to feed the world.Another World Bank report concluded that GM crops have little
7、to offer to the challenges of worldwide poverty and hunger，because better ways out are available，among which “green” farming is supposed to be the first choice.57 The author develops the second paragraph mainly_.Aby classificationBby comparisonCby exampleDby processC58What does the underlined word “
8、boost” in the third paragraph probably mean?AControl. BEvaluate. CObtain. DIncrease.aD59GM companies promise farmers that they will benefit from_.Apractising “green” farmingBuse of less chemicalsCfair distribution of their cropsDusing more crops for fuelB60Which of the following best describes the a
9、ttitude of the author towards GM technology?AOptimistic. BDefensive. CDisapproving. DCasual.C破题思路破题思路本文对转基因食品展开了论述。转基本文对转基因食品展开了论述。转基因食品曾经被认为能够解决世界粮食因食品曾经被认为能够解决世界粮食危机，但现在看来，转基因食品非但危机，但现在看来，转基因食品非但没有解决预期的问题，却带来了诸多没有解决预期的问题，却带来了诸多的问题，引发了更多的争议，那么解的问题，引发了更多的争议，那么解决世界粮食问题的出路在哪里呢？决世界粮食问题的出路在哪里呢？疑难剖析疑难剖析A
10、nother World Bank report concluded that GM crops have little to offer to the challenges of worldwide poverty and hunger，because better ways out are available，among which “green” farming is supposed to be the first choice.(Paragraph 5)该该句句为为复复合合句句，结结构构较较为为复复杂杂。首首先先主主句句中中使使用用了了that引引导导的的宾宾语语从从句句，从从句句是
11、是一一个个because引引导导的的原原因因状状语语从从句句，在在原原因因状状语语从从句句中中又又使使用用了了“介介词词amongwhich”引引导导的的定定语语从从句。句。句意：另一个世界银行的报告得出结句意：另一个世界银行的报告得出结论认为转基因作物对于解决世界范围论认为转基因作物对于解决世界范围的贫穷和饥饿没有多大的帮助，因为的贫穷和饥饿没有多大的帮助，因为还有更好的方法，其中绿色农业被认还有更好的方法，其中绿色农业被认为是第一选择。为是第一选择。名师支招名师支招了了解解文文章章结结构构、熟熟悉悉文文章章体体裁裁、整整合合相相关关信信息息是是提提高高考考生生阅阅读读题题目目准准确确性性的关键。的关键。这篇文章属科普类文章，介绍了转基这篇文章属科普类文章，介绍了转基因农业的相关情况。因农业的相关情况。文章第二段第一句就表达了作者的基调文章第二段第一句就表达了作者的基调转基因农业没有增加农业产量。最转基因农业没有增加农业产量。最后一段第一句说科学家找到了更好的方后一段第一句说科学家找到了更好的方法来给人类提供食物。可见作者对转基法来给人类提供食物。可见作者对转基因持不认可的态度，这样因持不认可的态度，这样60题的答案就题的答案就显而易见了。显而易见了。
