Each insect in a colony seemed to have its own agenda，and yet the group as a whole appeared to be highly organized.This was most apparent in the way in which ants travel to and from a food source.Ants form and maintain a line to their food source by laying a trail of pheromone，a chemical to which other members of the same species are very sensitive.They deposit a certain amount of pheromone while walking，and each ant prefers to follow a direction where a lot of pheromone can be found.This enables the ant colony to quickly find the shortest route.

　　The social behaviour of ants is among the most complex in the insect world.They communicate by touch and smell，constantly touching each other to pass on their nest odour.There are also some fairly aggressive tendencies exhibited by many ants.For example，ants have the ability to take over the nest of other ant species.The queen will attack and kill the queen of other species，and then cover herself with the odour of the other queen so she will be accepted by the colony residents.

　　All ants have amazing design features.They have two sets of jaws—the outer pair is used for carrying objects and for digging，while the inner pair is used for chewing.Some ants can lift food items that are up to seven times as heavy as themselves.They control the population numbers of many other species.Ants can eat animals，plants，and even the seeds of many plants.

　　Actually，according to what scientists have investigated，ant’s highly complex social structure，life cycle，strength，are all said to be the result of evolution.

【2016届高三（牛津版）英语一轮复习课后达标检测1 Unit 1《School life》】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 M11《Unit 4　The next step》Word版含解析

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M6《Unit 3　Understanding each other》

★ 【浙江专用】2014届高考英语一轮复习课时作业(三十九)选修8Unit 4《Pygmalion》

★ 2014届高考英语一轮复习课时作业(二)必修1Module 2《My New Teachers》（外研版）

★ 2014届高考英语一轮复习课时作业(三十八)选修7Module 2《Highlights of My Senior Year》（外研版）

★ 【三维设计】2017届高考英语（江苏专用）二轮复习课件：必修3 Unit 1《The world of our senses》

★ 2014届高考英语一轮复习课时作业(四十六)选修8Module 4《Which English？》（外研版）

★ 四川省2016届高考英语一轮复习课时作业（45） Module 3 Foreign Food 外研版选修8

★ 2017届高考英语二轮复习书面表达限时测验：1（含解析）

★ 2017届高考英语二轮复习课时训练：10（含解析）