2025年四级难度英语完形填空一篇带答案解析

Trust is a tricky business. On the one hand, it's a necessary condition ___1___ many worthwhile things: child care, friendships, etc. On the other hand, putting your ___2___, in the wrong place often carries a high ___3___.___4___, why do we trust at all? Well, because it feels good. ___5___ people place their trust in an individual or an institution, their brains release oxytocin, a hormone that ___6___ pleasurable feelings and triggers the herding instruct that prompts humans to ___7___ with one another. Scientists have found that exposure ___8___ this hormone puts us in a trusting ___9___: In a Swiss study, researchers sprayed oxytocin into the noses of half the subjects; those subjects were ready to lend significantly higher amounts of money to strangers than were their ___10___ who inhaled something else.___11___ for us, we also have a sixth sense for dishonesty that may ___12___ us. A Canadian study found that children as young as 14 months can differentiate ___13___ a credible person and a dishonest one. Sixty toddlers were each ___14___ to an adult tester holding a plastic container. The tester would ask, “What's in here?” before looking into the container, smiling, and exclaiming, “Wow!” Each subject was then invited to look ___15___. Half of them found a toy; the other half ___16___the container was empty-and realized the tester had ___17___ them.Among the children who had not been tricked, the majority were ___18___ to cooperate with the tester in learning a new skill, demonstrating that they trusted his leadership. ___19___, only five of the 30 children paired with the "___20___" tester participated in a follow-up activity.1. A. onB. likeC. forD. from2. A. faithB. concernC. atte...