TOEFL Reading: ETS-TOEFL阅读机经 - 1J55LKE3Y5D04L3ZL$

Paragraph 6 returns to a discussion of the bronze buttery in order to A. demonstrate that information about species in their native habitat can be applied to controlling their spread in new habitats B. emphasize the negative effects of parasitic wasps on butterflies in general C. further support the claim that the bronze butterfly was accidentally introduced to mainland Spain D. conclude by recommending the development of careful pest control strategies so that the ecology is not damaged