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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
59
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.
【C19】
选项
A、quite
B、also
C、yet
D、right
答案
D
解析
副词辨析题。句意为:这些规则包括“向距离你较远的邻居加速前进”以及“当有一个邻居在你正前方时应减速”。该空格所需填入的副词用于说明其后的in front of,而该词组是用于表示位置关系的。right“恰好,正好”可修饰其后表示位置关系的词组,并符合上下文语境。前文没有列举相同或相似的情况,故also“也”不合文意,可排除;yet“还”一般用于否定句,表示时间关系,也不适用于此处语境,排除;quite“完全”多表示程度,修饰形容词,而不适宜修饰位置关系,排除。
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0
专业英语四级
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