专题05 阅读理解20篇（名校最新期中真题）-2023-2024学年高一英语上学期期中复习查缺补漏冲刺满分（北师大版2019）

北师大版（2019）高一英语上学期期中复习 查缺补漏冲刺满分 (名校最新期中真题) 专题05 阅读理解20篇 （2022秋·浙江宁波·高一效实中学校考期中）Anyone who commutes (通勤) by car knows that traffic jams are an unavoidable part of life. But humans are not alone in facing potential jams. Ants also commute — between their nest and sources of food. The survival of their colonies depends on doing this efficiently. When humans commute, there’s a point at which cars become dense (稠密) enough to slow down the flow of traffic, causing jams. Motsch, a mathematician in Arizona State University, and his colleagues wanted to know if ants on the move could also get jammed. So they regulated traffic density by constructing bridges of various widths between a colony of Argentine ants and a source of food. Then they waited and watched. “The goal was to try to find out at what point they are going to have a traffic jam.” said Sebastien Motsch. But it appears that that never happened. They always managed to avoid traffic jams. The flow of ants did increase at the beginning as ants started to fill the bridge and then levelled off at high densities. But it never slowed down or stopped, even when the bridge was nearly filled with ants. The researchers then took a closer look at how the behaviour of individual ants impacted traffic as a whole. And they found that when ants sense overcrowding, they adjust their speeds and avoid entering high-density areas, which prevents jams. These behaviours may be promoted by pheromones, chemicals that tell other ants where a trail is. The ants also manage to avoid colliding (碰撞) with each other at high densities, which could really slow them down. The study is in the journal eLife. Can ants help us solve our own traffic problems? Not likely, says Motsch. That’s because when it comes to getting from point A to point B as fast as possible, human drivers put their own goals first. Individual ants have to be more cooperative in order to feed the colony. But the research could be useful in improving traffic flow for self-dr