科学美国人60秒 SSS 2013-09-04
时间：2019-01-20 作者：英语课 分类：Scientific American(九)月
A baby's cries for food might drive tired parent aggravation,but some species take more drastic measures like the burying beetle,the [xxxxx] which punish it's pesky children by eating them,researches want to get to the bottom of a age-old question in evolutionary 1 biology,the origin of begging, Natural selection favors of greedy well-fed child,but it also favors parents xxxx food evenly to the young and save some for themselves.So how do you result that parent child conflict,burying beetles 2 do so by putting the ultimate price on pleading:death.Begging larvae 3 were 13 times more likely than layback larvae to be eating by mom which may discourage from asking for more than their fair sure in the grub. That finding appears in the journal behavior ecology,humans have different standers than beetles do of course,For us pestering 4 your parents may be a good thing.One study suggest crying to sign a good health which may lower baby's chance that being neglected or abused, Than again, after the first few years,you probably better off not being a cry baby.
- Life has its own evolutionary process.生命有其自身的进化过程。
- These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
- Beetles bury pellets of dung and lay their eggs within them. 甲壳虫把粪粒埋起来，然后在里面产卵。 来自《简明英汉词典》
- This kind of beetles have hard shell. 这类甲虫有坚硬的外壳。 来自《现代汉英综合大词典》
- Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
- The larvae prey upon small aphids.这种幼虫以小蚜虫为食。