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Shoals of fish are able to move and turn in seamless formation by following simple rules that are like those used by car drivers
Shoals of fish are able to move and turn in seamless formation by following simple rules that are like those used by car drivers
admin
2012-05-04
35
问题
Shoals of fish are able to move and turn in seamless formation by following simple rules that are like those used by car drivers, researchers say.
Some of the most【C1】______sights in nature happen when animals form【C2】______ groups and move together as if【C3】______. Earlier work has shown that fish in large groups make better decisions than【C4】______or small groups.
Many theories have been【C5】______ about how animals might communicate in order to【C6】______this. But now it appears really simple. The researchers【C7】______groups of two, four or eight mosquito fish in a square arena for five minutes【C8】______studied the movements of individuals in each group. The【C9】______of the swimming fish were fed into software which acts like many pairs of eyes to keep【C10】______ on the direction and speed of each fish in the school and【C11】______it responds to other fish around it.
As schools of fish rarely suffer from crashes or【C12】______, the rules they use could also【C13】______be applied to robotic systems to solve traffic problems. If a system could be【C14】______ where each car knew where each car was and they could respond to each other and communicate with each other, traffic problems【C15】______ be avoid.
The researchers used a technique called artificial neural networks to look for【C16】______ in the data. And it turns out the【C17】______ well-organized swimming that fish in shoals【C18】______is actually caused by each fish using very simple rules to respond to its neighbors. These rules include " accelerate towards a neighbor that is far away from you" and " decelerate when a neighbor is【C19】______ in front of you". It is also found that a fish only responds to a single nearest neighbor at any one time. Those【C20】______ to be the rules people use when they are driving.
【C1】
选项
A、misleading
B、incredible
C、universal
D、dreadful
答案
B
解析
形容词辨析题。句意为:自然界中最令人难以置信的现象是动物们会形成队列并一起移动,好像是安排好的一样。本文所要重点介绍和解释的现象是动物会自发排队行进。这种现象可用什么词来形容,应依据本段和其后一段来判断,根据本段中的earlier work和下一段中的Many theories,这种现象引起人们的关注和兴趣,同时,第三段第二句提到“现在看来这是很简单的”。观察四个选项,incredible“令人难以置信的”为最佳答案。既然引发研究的兴趣,应不是司空见惯的事情,故排除universal“普遍的”;由第三段第二句可知,这种现象已有了解释,故排除misleading“误导的,令人迷惑的”;而上下文没有文字表明这种现象是“令人恐惧的”,故排除D项dreadful。
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0
专业英语四级
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