Howweretrafficlightsborn?交通灯是如何诞生的?Trafficlightsareveryimportanttous,Ithinkyouknowthis.交通灯是对我们非常重要,我认为你知道这一点。Butdoyouknowhowtheywereborn?但是你知道他们是如何诞生的吗?Gerret.A.Morganwasthefatheroftrafficlights.HewasAmerican.Gerret.A.Morgan是交通灯之父。他是美国人。Morganwasbornin1875.Hisfamilywasverypoor.摩根出生于1875年。他家非常穷。Heleftschoolattheageof14.Hewasveryclever.他14岁的时候离开学校。他很聪明。Healwayslookedforbetterwaystodothings.他总是寻找更好的方法来做些事。Andhelikestomakenewthings.他喜欢制作新东西。Atthattime,everyAmericanwantedtohaveacar.在那个时候,每个美国人都想有一辆车。Streetswerefullofcars.Thetrafficwasreallybad.街道上到处是汽车。交通非常糟糕。“Whynotputthreelightsatcachstreetcorner?为什么不在街头安装三盏灯呢？Theyshouldbered,greenandyellow.”Morgansaid,它们应该是红、绿、黄三种颜色。摩根说。Letthemtellcarstogoorstop.Hemadetimertochangethelights.让它们告诉汽车去还是停止。他做了定时器改变灯。问题：（）1、Trafficlightsarevery____________tous.A.importantB.newC.oldD.poor（）2、Gerret.A.Morganwasthe____________oftrafficlights.A.motherB.sisterC.grandfatherD.father（）3、Let____________tellcarstogoorstop.A.redlightB.blueandyellowlightC.greenandyellowlight.D.bothAandC（）4、Streetswerefullof____________.A.peopleB.shopsC.trafficlightsD.cars（）5、The____________lightsstopthecars.A.trafficB.redC.greenD.yellow
