Question

13．HandEnergy is an apple-sized device （设备） that charges your phone anytime，anywhere．But what really makes this thing special is the fact that it uses your own personal energy to do it．
In a time where power-banks （充电宝） and solar-power devices have become mainstream，a device that lets you charge doesn't sound very special．But while power-banks have to be charged the old fashioned way，and solar-power devices need the sun to store energy，HandEnergy just needs a hand．To get this little guy to produce energy，which it then stores in built-in batteries，all you have to do is hold it in your hand and rotate （旋转） your wrists．
To use HandEnergy，users start by winding a starter ring．This sends a signal to activate the rotor （旋转器），at which point they can start rotating their wrists to keep the rotor spinning．It might sound hard to believe，but the rotor inside HandEnergy spins at an average speed of 5，000 rotations per minute，changing mechanical power into an electric current，and charging the built-in batteries．To charge a device，all you have to do is connect it to HandEnergy using a USB cable．
HandEnergy was successfully crowdfunded on Kickstarter，raising over﹩71，000 m one month，and will be available for the masses in May 2018，at a price of﹩99．One thing is for sure-it beats paying thousands of dollars on a solar-powered charging device．

28．What is HandEnergy used for？B
A．Controling an Apple phone．
B．Providing power．
C．Burning personal energy．
D．Amusing a child．
29．How does HandEnergy produce energy？B
A．By exposing it to the sun．
B．By keeping its rotor spinning．
C．By connecting the power source．
D．By opening and closing your hand．
30．Which of the following is the right order？C
①Users wind a starter ring．②The battery is charged．
③The rotor spins．④Users rotate their wrists．
A．①②③④B．③①②④C．①④③②D．③④①②
31．What can be inferred about HandEnergy from the last paragraph？D
A．It is sort of expensive．
B．It has come into market．
C．It is popular with the public．
D．It may have a bright future．

Answer 1

分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了一个提供力量的装置HandEnergy，只需要装懂手腕就能充电．

解答 28．B．细节理解题．根据第一段HandEnergy is an apple-sized device （设备） that charges your phone anytime，anywhere．But what really makes this thing special is the fact that it uses your own personal energy to do it可知这是一个提供力量的装置；故选B．
29．B．细节理解题．根据第二段To get this little guy to produce energy，which it then stores in built-in batteries，all you have to do is hold it in your hand and rotate （旋转） your wrists可知只要保持它的转子旋转就能获得能量；故选B．
30．C．细节理解题．根据文章To use HandEnergy，users start by winding a starter ring．This sends a signal to activate the rotor （旋转器），at which point they can start rotating their wrists to keep the rotor spinning．It might sound hard to believe，but the rotor inside HandEnergy spins at an average speed of 5，000 rotations per minute，changing mechanical power into an electric current，and charging the built-in batteries可知使用的顺序是用户使用起动机环，转动手腕，转子旋转，产生电流充电；故选C．
31．D．推理判断题．根据最后一段and will be available for the masses in May 2018，at a price of﹩99．One thing is for sure-it beats paying thousands of dollars on a solar-powered charging device可知它可能有光明的未来；故选D．

点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．