“In humans, there are obvious sex differences in children’s toy play, and these are remarkably similar across cultures,” says Kahlenberg. “While socialization by elders and peers has been the primary explanation, our work suggests that biology may also have an important role to play in activity preferences.”
In 14 years of data on chimpanzee behavior at the Kibale National Park in Uganda, Kahlenberg and Wrangham counted more than 100 examples of stickcarrying. Some young chimpanzees carried sticks into the nest to sleep with them and on one occasion built a separate nest for the stick. “We have seen juveniles occasionally carrying sticks for many years, and because they sometimes treated them rather like dolls, we wanted to know if in general this behavior tended to represent something like playing with dolls,” says Wrangham, a Professor at Harvard. “If the doll hypothesis (假设) was right, we thought that females should carry sticks more than males do, and that the chimpanzees should stop carrying sticks when they had their first child. We have now watched enough young chimpanzees to prove both points.”
52. What does a female chimpanzee do with sticks?
A. She gives them to her child to play with.
B. She treats them as dolls.
C. She makes useful tools from them.
D. She treats them as weapons.
53. What causes the different toy selection of chimpanzees, according to the passage?
【2017届高考英语总复习闯关密训卷 Unit2《Sailing the oceans》选修9】相关文章:
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M9《Unit 1 Other countries, other cultures》
★ 【浙江专用】2014届高考英语一轮复习课时作业(十六)必修4Unit 1《Women of achievement》
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M4《Unit 2 Sports events》
★ 【浙江专用】2014届高考英语一轮复习课时作业(二)必修1Unit 2《English around the world》
★ 【浙江专用】2014届高考英语一轮复习课时作业(二十五)必修5Unit 5《First aid》
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (51)
★ 四川省2016届高考英语一轮复习课时作业(37) Module 1 Basketball 外研版选修8
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修3 unit3《The Million Pound Bank Note》
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M6《Unit 1 Laughter is good for you》
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21