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mple-it's possible that Franklin did not perform the experiment himaeHowever,some historians remain unconvinced that the experiment wasn't carried out.Franklin eas biographer Cad Van Doren.also point to the fact that Priestley peeified the mth inwhiAeperformed his esperiment,suggesting that Franklin muat have given him precise details direetly.28.What was Franklin's achievement?AeC.TheB.He discovered electricity.D.He improved the structure of homes.D.The differene29.What can we learn from paragraph 4?33.What doeA.Franklin lived in the 17th century.A.BecB.Priestley's book came out in 1786.C.CeC.Priestley and Franklin were close friends.34.Why is creatinD.Priestley wrote the experiment happened in summer.A.The speed30.Why was the future conditional ese streedby Tucker?C.The placesA.To indicate he was good t observing.35.What might beB.To point out Franklin was careless in writing.What the tC.To show Franklin was just saying a possibility.C.Which sysD.To prove Franklin did the experiment by himself.第二节(共5N31.What is mainly talked about in the text?根据短文中A.The discovery of electricity.B.The development of the lightning rod.有两项为多余C.Benjamin Franklin's autobiographyD.Different opinions on Franklin's experimentThere areDRoad tripscan eem-hensmne unpleasant music fills the car.What if you coudglass to watchinstentoonly your musie without headphones and no ne ele would hear it?Now researchers in France areworkmyself in one.deliver such personal sound zones that adapt as conditions in your car change.301Why bother?Headphones are good at controlling what you hear,but they can be uncomfortable andvenon.That doesdamage your hearing.I recallPersonal listening zones inside a car could let you hear well without having to drown out other soundithNorth Koreanhigh volume.They also would bring many new possibilities.Everyone in a car could listen to their owncompetitionprivately.GPS alerts()could go only to the driver.Passengers could make phone calls without ingof moving onoverheard.Hard wEngineers are working to create these personal sound zones using multiple loudspeakers.They don al式)and sebroadcast the same signal,but the signals are coordinated ()A listener whose head is in someweetspot"hears high-quality sound.But as one gets farther from the sweet spot,the sound diminishes.That's beauseskinny boysound waves from different loudspeakers interact to cancel out each other's sound.%According to Patricia Davies,an engineer studying sound,creating quiet zones anywhere in aourselvesdimensional sace,like the inside of a vehicle,is challenging.One reason is that sound waves aresenDoingChanges in temperature can change how fast the waves travel.So can the number of people in the carandA.That shfactors.A small change in even one of these can have a big impact.B.They aStill,it reae personal sound o ncarthan in other spaces.nac,whaterC.Howevthat we know where the people are.The loudspeakers can be built right into the headrests.D.YouPersonalondwill only catch on if they ork s well as headphones.If you u on the airor pick up pener,theund qulity cno dowhilWth hn mnd,Melon and his erE.MostF.As wmodified an existing system.G.I wa英语试题第5页(共8页)
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