六级听力

    听力部分一直以来都是同学们考试时的难点，也是吐槽最多的部分。想要早点为下半年的四六级考试做准备就来四六级考试网练习一下英语 六级听力题吧，考虑六级听力的特点，我们特别准备了VOA的常速听力材料哦。

　　 听力音频点击下载.mp3

听力材料：

　　It's a robotic version of nature's survival of thefittest. The mother robot analyzes the performanceof each of the “children” it creates, and incorporatespreferential traits into the next generation.

　　As the mother creates them and puts them to work,she evaluates how they’re behaving, and she usesdata from this behavior to create the next generation of robots.

　　There’s no human intervention, except for a computer command to create a robot capableof moving from one place to another. The mother builds its children by gluing together pieceswith small motors inside, in different configurations. Then it watches how quickly the childrenmove, keeping the designs of the ones that moved the fastest.

　　The mother robot can actually build hundreds of child robots and see the performance ofthese child robots. And if their performance is good, keep their design for the nextgeneration. And if bad, just let it go,

　　The motivation to produce better children is controlled by the research team, which providesan incentive.

　　We program the robot based on some functions that define the reward the robot is going toget, depending on the construction that they make. They cannot change their own reward. Inthe case of the child robot, it’s distance, so the longer the distance the robot walks, the betterthe reward it receives,

　　After several generations, the "children" were running twice as fast.

　　The mother robot generated 500 robots to see what one is good and which one is bad,

　　The researchers suggest the machines could be used in an auto plant, for example, where robotcameras scrutinize each car in the assembly line, evaluate any mistakes, and then design abetter car.

　　1.capable of 有…能力

　　例句：I believe I am capable of calculating thepolitical consequences accurately.

　　我觉得我能准确预料此事的政治后果。

　　2.assembly line 流水线

　　例句：The assembly line of necessity kept moving.

　　生产线势必保持运转下去。

　　3.auto plant 汽车制造厂

　　例句：Striking workers halted production at the auto plant yesterday.

　　罢工工人于昨日停止了汽车厂的生产。

　　4.incorporate into 并入

　　例句：The life education program was feasible to incorporate into the Integrative ActivitiesLearning Area.

　　本研究之生命教育方案为适合融入综合活动学习领域之课程.

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