We’ve all experienced similar annoying tricks when we were young—the brother who stole your ball and then got you into trouble by telling your parents you had hit him.But Mary and John are not humans.They’re African baboons(狒狒).　1　  

　　John’s scream and his mother’s attack on Mary could have been a matter of chance,but John was later seen playing the same tricks on others.　2　  

　　Studying behavior like this is complicated but scientists discovered apes(猿) clearly showed that they intended to cheat and knew when they themselves had been cheated.　3　 An ape was annoying him,so he tricked her into going away by pretending he had seen something interesting.When she found nothing,she “walked back,hit me over the head with her hand and ignored me for the rest of the day.” 

　　Another way to decide whether an animal’s behavior is deliberate is to look for actions that are not normal for that animal.A zoo worker describes how an ape dealt with an enemy.“He slowly stole up behind the other ape,walking on tiptoe.When he got close to his enemy,he pushed him violently in the back,then ran indoors.” Wild apes do not normally walk on tiptoe.　4　 But looking at the many cases of deliberate trickery in apes,it is impossible to explain them all as simple copying. 

　　It seems that trickery does play an important part in ape societies.　5　 Studying the intelligence of our closest relative could be the way to understand the development of human intelligence. 

【2017届高考英语一轮复习知识梳理练习：选修8 Unit 24 Society（北师大版）】相关文章：

★ 四川省2016届高考英语一轮复习课时作业（48） Module6 The Tang Poems 外研版选修8

★ 2017高考四川省广安市英语阅读理解一轮系列训练：20（含解析）

★ 【浙江专用】2014届高考英语一轮复习课时作业(十九)必修4Unit 4《Body language》

★ 【人教版】2014届高考英语一轮复习指导考点针对练：必修1 unit3《Travel journal》

★ 2017届高考英语二轮复习课时训练：17（含解析）

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（9）及答案

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (50)

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (25)

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：4（含解析）

★ 【三维设计】2017届高考英语（江苏专用）二轮复习素材：高考单词2.背佳句记单词