试题详情来源：辽宁大连24中高三2018-2019学年上学期10月月考

试题详情来源：辽宁大连24中高三2018-2019学年上学期10月月考试英语试题难度：一般使用：76次上传：2018-12-20知识点：【题文】When we go out traveling,we need either a map or GPS to point us in the right direction.But bumblebees（大黄蜂）have neither of these things,yet they still know the best route.Why is that?It turns out that these hard-working little bees try many possible passages before picking out the best one and remembering it the next time they journey out.They learn from“trial and error”,according to a study by scientists from the University of London.We use it all the time in our daily lives—trial and error is a helpful problem-solving method.It is the basic concept of“learning from your mistakes”.Most of the time,we fail on our first try,so we analyze the failure,make adjustments and try again.After repeating this a few times,we finally get things right.This might sound a bit tiring,but it’s certainly effective and it works for bumblebees.In the study,scientists set up five artificial flowers in a field.Each one of them was fitted with motion-triggered（运动触发的）cameras and had landing platforms with drops of sugar in the middle to attract the bees.At first,scientists noticed the bees’ flying routes were long and complex.But after they gained enough experience,they gradually got to their destination quicker.Every time a bee tried a new route that was shorter than the route it had tried before,it was likely to use it again.Otherwise the new route would simply be given up and another one was tested.“The speed at which they learn through trial and error is quite extraordinary for bumblebees,as this complex behavior was thought to be one that only larger-brained animals have,”Professor Lars Chittka,leader of the study,told Sciencedaily.com.In fact,the smart bumblebees don’t try every possible route.Normally,they would only try about 20 out of the 120 possible routes to visit the flowers.More interestingly,scientists found that if they removed a flower,bees would continue looking at that location,even if it has been empty for a long time.“It seems bees don’t easily forget a fruitful flower,”Chittka said.