2. 外语
  3. Ants first captured the attention of software engineers in the early 1990s. A single ant cannot do much on its own, but a group

Ants first captured the attention of software engineers in the early 1990s. A single ant cannot do much on its own, but a group

admin2012-01-27  54
问题     Ants first captured the attention of software engineers in the early 1990s. A single ant cannot do much on its own, but a group of ants【C1】______can solve complex problems. That inspired people like Marco Dorigo, who is one of the founders of a【C2】______known as group intelligence.
    Ants are good at choosing the shortest possible route between a food【C3】______and their nest. This reminds us of a classic computational travelling-salesman problem. Given a list of cities and their【C4】______apart, the salesman must find the shortest route needed to visit each city once. As the number of cities【C5】______, the problem gets more complicated.
    Ants solve their own problem using chemical signals called pheromones (信息素), when an ant finds food, she takes it back to the nest, 【C6】______a pheromone trail that will attract others. The more ants that【C7】______the trail, the stronger it becomes. 【C8】______, the pheromones evaporate (挥发) quickly, so once all the food has been collected, the trail soon goes cold. This rapid evaporation means long trails are less【C9】______than short ones, all else being equal. Pheromones thus turn the【C10】______intelligence of the individual ants into something more powerful.
【C10】
选项 A、interrupted
B、limited
C、considerable
D、unreliable
答案B
解析 本题测试词汇。题干意思为：因此信息素把单个蚂蚁的有限智慧变得更强大。只有limited表示“有限的”。故选B。
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