What happens to those insects when not killed by
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What happens to those insects when not killed by the spray of insecticide?
A. They may lose their ability to produce offspring.
B. They may have a higher ability to adapt to the environment.
C. They move to other fields free from insecticide.
D. They never eat again those plants containing insecticide.
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答案：B
答案的依据是第六段第一句“Some insects that are not killed by GM foods might find themselves made stronger."