2．Ever since they were first put on the market in the early 1990s，gentically mondified （GM，轉基因） 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（殺蟲劑）．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 本文是一篇說明文，文章開始講述的是轉基因糧食自投放市場以來發展前景還是好的，有人預言轉基因糧食能解決世界饑荒問題，但事實上這些轉基因糧食并不能真正解決世界饑荒危機，饑荒危機是由食物分配與政治等諸多因素引起的，需要我們付出努力投入資金，會有更好的方法來解決世界饑荒危機，比如：綠色農業是一個首選．
解答 57．C 推理判斷 根據第二段第三行"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，該段采用的是舉例子的方法．
58．D 猜測詞義 根據下上文"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，他們承諾為了幫助農民解決糧食問題，通過減少化學品的使用和提高（increase）糧食產量的方式實現，故選B．
59．B 細節理解 根據第三段第一二行"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（殺蟲劑）"可知，他們將通過節省花在買農藥（殺蟲劑）的錢來帶巨大的利益．故選B．
60．C 作者情感 根據最后一段"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，所以對于轉基因糧食持不贊成態度，故選A．
點評 解答細節理解題時，一個常用的方法就是運用定位法，即根據題干和選項中的關鍵詞從原文中找到相關的句子，與選項進行比較從而確定答案；推理判斷題既要求學生透過文章表面文字信息推測文章隱含意思，又要求學生對作者的態度、意圖及文章細節的發展作正確的推理判斷，力求從作者的角度去考慮，不要固守自己的看法或觀點．
