( 26 分）阅读图文资料回答下列问题。

资料一：2004 年开春，刚刚大学毕业的黑龙江青年孙刚，在资料二图中阴影地区租下了20公顷上好的耕地，开始了其在远东的“地主”生涯。此前他的老乡们在该地区租地种植黄豆已有两三年的历史，而且收成不错。

资料二：俄罗斯简图

(1）为什么黑龙江农民去俄罗斯租地种大豆？说明这种做法的积极意义。 ( 12 分）

(2）根据俄罗斯的国情，结合交通运输方式选择的原则，分析为什么俄罗斯以铁路运输为主。( 10 分）

(3）有人建议图中阴影区域大量吸纳移民，你是否赞成这个建议？为什么？（4分）

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 (52) can solve complex problems. That inspired people like Marco Dorigo, who is one of the founders of a (53) known as group intelligence.

Ants are good at choosing the shortest possible route between a food (54) and their nest. This reminds us of a classic computational travelling-salesman problem. Given a list of cities and their (55) apart, the salesman must find the shortest route needed to visit each city once. As the number of cities (56) , 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, (57) a pheromone trail that will attract others. The more ants that (58) the trail, the per it becomes. (59) , 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 (60) than short ones, all else being equal. Pheromones thus turn the (61) intelligence of the individual ants into something more powerful.

55().

A. locations

B. positions

C. spaces

D. distances