(2010届青岛质检)在超市中无公害蔬菜很多，也很受市民的欢迎。这些无公害蔬菜在生产中，不使用农药、杀虫剂和化肥等。假如在蔬菜的生产中长期使用某种杀虫剂，其结果是(　　)_刷题宝

题干

(2010届青岛质检)在超市中无公害蔬菜很多，也很受市民的欢迎。这些无公害蔬菜在生产中，不使用农药、杀虫剂和化肥等。假如在蔬菜的生产中长期使用某种杀虫剂，其结果是(　　)

A：杀虫剂诱发了害虫抗药性基因的产生，使害虫的抗药性增强

B：杀虫剂对害虫具有选择作用，使抗药性害虫的数量增加

C：杀虫剂能诱导害虫分解药物的基因大量表达

D：害虫全部消失，最终导致某些害虫的物种灭绝

上一题下一题 0.0难度选择题更新时间:2017-08-31 08:01:24

答案(点此获取答案解析）

B

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