NameandMaterialofTheTrafficLightBeingInventedDateandPlaceInventorThefirsttrafficlightslookedlikerailwaysignalswithredandgreengaslampsfornightuse．onDecember10，1868，inLondonJ．P．Kn

Question

Name and Material of The Traffic Light	Being   Invented   Date and Place	Inventor
The first traffic lights looked like railway signals with red and green gas lamps for night use．	on December 10，1868， in London	J．P．Knight
The modern electric traffic lights were red-green electric traffic lights．	in 1912， in Salt Lake City	policeman called Lester Wire
A traffic signal system had two colors，red and green，and a buzzer（报警器）．	on August 5，1914， an American Traffic Signal Company	James Hoge
The  first  four-way，three-color  traffic light	In  9120，in    Detroit，     Michigan	a  police     officer   called William Potts

根据表格内容，判断正（T）误（F），并将正确的选项涂在答题卡相应的位置．
51．The modern traffic lights invented in 1914．___
52．James Hoge invented the traffic signal system with a buzzer．___
53..The first traffic lights looked like railway signals．___
54．J．P．Knight invented the modern electric traffic light．___
55．William Potts invented the first four-way，three-color traffic light in 1912．___．

Answer 1

答案：51．F 细节判断题．根据表格二句子The first traffic lights looked like railway signals with red and green gas lamps for night use．on December 10，1868，in London．第一个交通灯看起来像铁路信号，红...