2．Ever since they were first put on the market in the early 1990s，gentically mondified （GM，转基因） foods have been increasingly developed and marketed in many countries in the word，mainly on the basis of their promise to end the worldwide food crisis．But can GM technology solve world hunger problems？Even if it would，is it the best solutiorr？
Despite what it promises，GM technology actually has not increased the production potential of any corp．In fact，studies show that the most crown GM croo．
GM soybeans，has suffered reduced productivity．For instance，a report than analysed nearly two decades of research on mojor 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 companics tell farmers that they will make good profits by saving money on pesticides（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 nether is true，"said Bill Christison，President of the US National 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 indeed 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 2008World 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 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 mainlyC．
A．by classification
B．by comparison
C．by example
D．by process
58．What does the underlined word"boost"in the third paragraph probably mean？D
A．Control．
B．Evaluate
C．Obtain．
D．Increase．
59．GM companies promise farmers that they will benefit fromB．
A．practicing"green"farming
B．use of less chemicals
C．fair distribution of their crops
D．using more crops for fuel
60．Which of the following best describes the attitude of the author towards GM technology？C
A．Optimistic
B．Defensive
C．Disapproving
D．Casual．
分析 本文是一篇说明文，文章开始讲述的是转基因粮食自投放市场以来发展前景还是好的，有人预言转基因粮食能解决世界饥荒问题，但事实上这些转基因粮食并不能真正解决世界饥荒危机，饥荒危机是由食物分配与政治等诸多因素引起的，需要我们付出努力投入资金，会有更好的方法来解决世界饥荒危机，比如：绿色农业是一个首选．
解答 57．C 推理判断 根据第二段第三行"For instance，a report than analysed nearly two decades of research on major GM food crops shows that GM engineering has failed to significantly increase US crop production．"可知，该段采用的是举例子的方法．
58．D 猜测词义 根据下上文"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．"可知，他们承诺为了帮助农民解决粮食问题，通过减少化学品的使用和提高（increase）粮食产量的方式实现，故选B．
59．B 细节理解 根据第三段第一二行"Something else，however，has been on the rise，While GM seeds are expensive，GM companies tell farmers that they will make good profits by saving money on pesticides（杀虫剂）"可知，他们将通过节省花在买农药（杀虫剂）的钱来带巨大的利益．故选B．
60．C 作者情感 根据最后一段"As a matter of fact，scientists see better ways to feed the world"可知，有很多更好的方法可以采用，所以对于转基因粮食持不赞成态度，故选A．
点评 解答细节理解题时，一个常用的方法就是运用定位法，即根据题干和选项中的关键词从原文中找到相关的句子，与选项进行比较从而确定答案；推理判断题既要求学生透过文章表面文字信息推测文章隐含意思，又要求学生对作者的态度、意图及文章细节的发展作正确的推理判断，力求从作者的角度去考虑，不要固守自己的看法或观点．
