Thereareanextremelylargenumberofantsworldwide.Eachindi...
问题详情:
There are an extremely large number of ants worldwide. Each individual (个体的) ant hardly weigh anything, but put together they weigh roughly the same as all of mankind. They also live nearly everywhere, except on frozen mountain tops and around the poles. For animals their size, ants have 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 millions, they organize their lives with a clear division of labor. Even more amazing is how they achieve this level of organization. Where we use sound and sight to communicate, ants depend primarily on pheromone (外激素), chemicals sent out by individuals and smelled or tasted by fellow members of their colony. When an ant finds food, it produces a pheromone that will lead 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. 9.We can learn from the passage that ants are ____________. A.not willing to share food
B.not found around the poles C.more successful than all other animals
D.too many to achieve any level of organization 10.Ants can use pheromones for______. A.escape B.communication
C.warning enemies D.arranging labor 11.What does the underlined expression "take on" in Paragraph 3 mean? A.Accept. B.Employ. C.Play with. D.Fight against.
【回答】
BBD
知识点:阅读理解
题型:阅读理解
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我们每天都生活在阳光不断变化的物质世界里。下列变化一定属于化学变化的是( )A.用干*做制冷剂进行人工降雨B...
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(2011·河南省洛阳市统考)依次填入下列各句横线的词语,最恰当的一项是( )①近日,济宁联通公司在全市范...
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人的生命是从一个小小的__________________发育开始的。
问题详情:人的生命是从一个小小的__________________发育开始的。【回答】受精卵【解析】试题分析:卵细胞和精子都不能进行细胞*、分化、发育等生命活动,只有精子与卵细胞结合形成受精卵时,才标志着新生命的起点,然后种植在子宫内膜上,即怀孕开始,然后受精卵经过细胞*...
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