高考35分钟达标练26：2篇阅读 7选5 语法填空.docxVIP

高考35分钟达标练24：2篇阅读+7选5+语法填空 A Anyone who goes to and off work by car knows that traffic jams are an unavoidable part of life.But humans are not alone.Ants also travel regularly between their nest and sources of food.The survival of their groups depends on doing this efficiently. For humans，theres a point at which cars become dense(密集的) enough to slow down the flow of traffic，causing traffic jams.Motsch，Assistant Professor at Arizona State University，and his colleagues wanted to know if the same is true of ants.So they controlled traffic density(密度) by constructing bridges of various widths between a group of Argentine ants and a source of food.Then they waited and watched.But it appears that jams have never happened.They never，at one point，just stopped.They always managed to avoid traffic jams. The flow of ants did increase initially as ants started to fill the bridge and then leveled off.But it never slowed down，even when the bridge was nearly full of ants.The researchers then took a closer look at how the behavior of each individual ant impacted traffic as a whole.That meant carefully tracking thousands of separate ants as they made their way across the bridge.Motsch and his team found that when ants sensed overcrowding，they adjusted their speeds and avoided entering high-density areas，which prevented jams.Ants also managed to avoid colliding with each other at high-density areas，which could really slow them down. Can ants help us solve our own traffic problems？Not likely，says Motsch.Thats because when it comes to getting from point A to point B as fast as possible，human drivers put their own goals first.Ants have to be more cooperative(配合的) in order to feed the group.But the research could be useful in optimizing(使最优化) the traffic flow for self-driving cars，which can be designed to be more like ants. 1．What does Motschs initial experiment intend to find about ants? A．Why ants slow down the flow of traffic. B．How ants avoid traffic jams. C．How ants pass bridges of v