neither is true，"said Bill Christison，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 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 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 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 ______．

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?

A．Control．

B．Evaluate．

C．Obtain．

D．Increase．

59．GM companies promise farmers that they will benefit from ______ ．

A．practising "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 ?

A．Optimistic．

B．Defensive．

C．Disapproving．

D．Casual．

答案解读：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危机，但现在看来，转基因食品非但没有解决危机，还带来了诸多的问题，引发了更多的争议。

57．C 写作手法题。根据第二段中的For instance可知，作者第二段的写作是通过举例说明的手法展开论述的。

58．D 词义猜测题。联系上下文可知，转基因技术的初衷是提高粮食产量，因为它要解决世界粮食短缺问题，由此可知选D，increase"增加，提高"。

59．B 细节理解题。根据第三段的第二句"．．．GM companies tell farmers that they will nake good profits by saving money on pesticides（杀虫剂）．"和该段中画线词所在的句子可知答案为B。

60．C 作者态度题。通读全文可以看出，作者对转基因食品持反对(disapproving