Traffic lights are very important for us. I think you know this. But do you know how they were born?
Garrett A. Morgan was the father of traffic lights. He was an American. His family was very poor. He left school at the age of 14. He was clever. He always looked for better ways to do things. And he liked to make new things.
At that time, every American wanted to have a car. The streets were full of cars. The traffic was really bad. “Why not put three lights at each corner ? They should be red,green,and yellow，” Morgan said , “ Let them tell cars to go or stop.” He made a timer (定时器)to change the lights.
So we have traffic lights today .
小题1:Todaycan help buses or cars to go regularly in cities .
A．Americans
B．Traffic lights
C．Chinese
D．policemen小题2:Garrett A.Morgan was the father of traffic lights. He came from.
A. Canada B. England C. America D. Japan
小题3:Why could Garrett A.Morgan invent traffic lights? Because.
A. he always looked for better ways to do things
B. his family was very poor
C. he wanted to have a car
D. He was clever
小题4:What did Garrett A.Morgan do when he was 14 years old ?
A.He studied at school.
B. He put three lights in the street.
C. He was away from school.
D. The streets were full of cars.
小题5:What color are the traffic lights ? They are.
A．green and white
B．red and yellow
C．red , green and yellow.
D．red and green
，正电荷
，正电荷
，负电荷
，负电荷