单选题 The Food and Agriculture Organisation has counted more than 300 agricultural pests which
A．are no longer responding to most pesticides in use.
B．can be easily controlled through the use of pesticides.
C．continue to spread disease in a wide range of crops.
D．may be used as part of bio-control's replacement of pesticides.

【正确答案】 A

【答案解析】[解析] 通过Food and Agriculture Organization和300这两个非常容易定位的专用名词及数字定位到原文中，找到题目定语从句which前面要修饰的主体：agricultural pests，文中说这些agricultural pests have developed resistance to a wide range of potent chemicals，即对化学药品有了抗药性，也就是不再受到杀虫剂的影响了，因此选A。
[干扰项] B项颠倒黑自；C项属于本身没错误但是扯远了，与定位不符；D项把第七段之后的内容搬过来了，只会对读完全文再做题的考生产生干扰。