你听说过动物和植物之间也有“生死之交”这回事吗?中世纪的欧洲,普鲁士国王腓(fei)特烈爱吃樱(ying)桃,可是麻雀老是啄(zhuo)食果园里的樱桃,于是国王下令灭雀,并重赏有功者。两年以后,麻雀果然减少了许多,可是樱桃也被害虫吃光了。国王猛然醒悟,麻雀虽然啄食樱桃,但不影响樱桃的正常生长,可麻雀被捕杀减少后,害虫开始在果园肆虐(si nüe),人们也就吃不到樱桃了。于是,国王又重 Have you ever heard of animals and plants that have a “cross between life and death”? In medieval Europe, the king of Prussia fei loved eating ying peaches, but the sparrow always pecked (zhuo) Eat cherries in the orchard, so the king ordered the birds to be destroyed and rewarded the meritorious ones. Two years later, the sparrow really reduced a lot, but the cherry was also eaten by pests. The king suddenly remembered that sparrows pecking at cherries did not affect the normal growth of the cherries. After the sparrows had been reduced, the pests started to wreak havoc in the orchard and people could not eat cherries. So, the king again heavy