第一节 阅读理解
阅读下面的短文从每题所给的A、B、C和D项中选出最佳选项。A
(2015·安徽卷)There are an extremely large number of ants worldwide.Each individual(个体的)ant hardly weighs anythinge been astonishingly successful,largely due to their wonderful social behavior.
In colonies(群体)that range in size from a few hundred to tens of millionsvel of organization.Where we use sound and sight to communicate,ants depend primarily on pheromones(外激素) others straight to where the food is.When an individual ant comes under attack or is dying,it sends out an alarm pheromone to warn the colony to prepare for a conflict as a defense unit.
In fact,when it comes to the art of war,ants have no equal. They are completely fearless and will readily take_on a creature much larger than themselves,attacking in large groups and overcoming their target.Such is their devotion to the common good of the colony that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.
Behaving in this selfless and devoted manner,these little creatures have survived on Earth for more than 140 million years,far longer than dinosaurs.Because they think as one,they have a collective(集体的)intelligence greater than you would expect from its individual parts.________. level of organization
2.Ants can use pheromones for________.B.communication
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